Belgian Princess Astrid and her daughter Princess Laetitia Maria pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

View of the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Paola and King Albert pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Paola and King Albert pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Paola and King Albert pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Paola and King Albert pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Paola and King Albert pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Princess Delphine and her husband James O'Hare pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Princess Delphine and her husband James O'Hare pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Mathilde and King Philippe pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Mathilde and King Philippe pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Mathilde and King Philippe pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Mathilde and King Philippe pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Princess Delphine pays tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Princess Delphine pays tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Princess Delphine pays tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Princess Delphine pays tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

Belgian Queen Mathilde and King Philippe pay tribute to the deceased members of the royal family at the Royal Crypt in Notre-Dame de Laeken church in Brussels, Belgium February 17, 2021. Danny Gys/Pool via REUTERS

A U.S. Capitol Tour Guide walks through the Crypt while wearing a protective face shield on Capitol Hill in Washington, U.S., January 27, 2021. REUTERS/Tom Brenner

Former President George W. Bush and Laura Bush arrive in the Crypt of the U.S. Capitol for President-elect Joe Biden's inauguration ceremony to be the 46th President of the United States, in Washington, U.S., January 20, 2021.Jim Lo Scalzo/Pool via REUTERS

President-elect Joe Biden and Dr. Jill Biden arrive in the Crypt of the U.S. Capitol for President-elect Joe Biden's inauguration ceremony to be the 46th President of the United States, in Washington, U.S., January 20, 2021.Jim Lo Scalzo/Pool via REUTERS

U.S. President Joe Biden (L) and First Lady Dr. Jill Biden walk through Crypt of the US Capitol after the inauguration ceremony to making Biden the 46th President of the United States, in Washington, DC, U.S. January 20, 2021. Jim Lo Scalzo/Pool via REUTERS

Senate Majority Leader Mitch McConnell and former Secretary of Transportation Elaine Chao (R) arrive in the Crypt of the U.S. Capitol for President-elect Joe Biden's inauguration ceremony to be the 46th President of the United States, in Washington, DC, U.S. January 20, 2021. Jim Lo Scalzo/Pool via REUTERS

Speaker of the House Nancy Pelosi and her husband Paul Pelosi arrive in the Crypt of the U.S. Capitol for President-elect Joe Biden's inauguration ceremony to be the 46th President of the United States in Washington, DC, U.S. January 20, 2021. Jim Lo Scalzo/Pool via REUTERS

Former U.S. President Barack Obama (L) and Michelle Obama arrive in the Crypt of the U.S. Capitol for President-elect Joe Biden's inauguration ceremony to be the 46th President of the United States in Washington, DC, U.S. January 20, 2021. Jim Lo Scalzo/Pool via REUTERS

Chief Justice John Roberts leads the U.S. Supreme Court Justices as they arrive in the Crypt of the U.S. Capitol for the 59th Presidential Inauguration in Washington, U.S., January 20, 2021. Jim Lo Scalzo/Pool via REUTERS

Former U.S. President Barack Obama and Michelle Obama arrive in the Crypt of the U.S. Capitol for the 59th Presidential Inauguration in Washington, U.S., January 20, 2021. Jim Lo Scalzo/Pool via REUTERS

Former U.S. President George W. Bush and Laura Bush arrive in the Crypt of the U.S. Capitol for the 59th Presidential Inauguration in Washington, U.S., January 20, 2021. Jim Lo Scalzo/Pool via REUTERS

U.S. President Joe Biden and U.S. first lady Jill Biden walk through the Crypt of the Capitol after the 59th Presidential Inauguration in Washington, U.S., January 20, 2021. Jim Lo Scalzo/Pool via REUTERS

Stand-ins portraying U.S. President-elect Joe Biden and Jill Biden walk through the Capitol Crypt during a dress rehearsal for 59th Presidential Inauguration at the U.S. Capitol, in Washington, U.S., January 18, 2021. Jim Lo Scalzo/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

Signage is seen inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

John Mason, 82, receives vaccination in the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

John Mason, 82, receives vaccination from nurse Anie Santillan in the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

John Mason, 82, receives vaccination from nurse Anie Santillan in the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

General view from inside the crypt of Blackburn Cathedral, as ten further mass vaccination centres opened in England with more than a million over-80s invited to receive their COVID-19 vaccine, Blackburn, Britain January 18, 2021. Peter Byrne/Pool via REUTERS

U.S. National Guard members walk among the columns of the crypt beneath the U.S. Capitol rotunda days after supporters of U.S. President Donald Trump stormed the Capitol in Washington, U.S. January 11, 2021. REUTERS/Joshua Roberts

U.S. National Guard members walk among the columns of the crypt beneath the U.S. Capitol rotunda days after supporters of U.S. President Donald Trump stormed the Capitol in Washington, U.S. January 11, 2021. REUTERS/Joshua Roberts TPX IMAGES OF THE DAY

U.S. National Guard members walk among the columns of the crypt beneath the U.S. Capitol rotunda days after supporters of U.S. President Donald Trump stormed the Capitol in Washington, U.S. January 11, 2021. REUTERS/Joshua Roberts

The spot in the U.S. Capitol's crypt where a statue of Confederate General Robert E. Lee had been, now sits empty, after the monument was removed to be replaced with a statue of Black civil rights pioneer Barbara Johns, on Capitol Hill in Washington, U.S., December 21, 2020. REUTERS/ Ken Cedeno

The spot in the U.S. Capitol's crypt where a statue of Confederate General Robert E. Lee had been, now sits empty, after the monument was removed to be replaced with a statue of Black civil rights pioneer Barbara Johns, on Capitol Hill in Washington, U.S., December 21, 2020. REUTERS/ Ken Cedeno

The spot in the U.S. Capitol's crypt where a statue of Confederate General Robert E. Lee had been, now sits empty, after the monument was removed to be replaced with a statue of Black civil rights pioneer Barbara Johns, on Capitol Hill in Washington, U.S., December 21, 2020. REUTERS/ Ken Cedeno

The spot in the U.S. Capitol's crypt where a statue of Confederate General Robert E. Lee had been, now sits empty, after the monument was removed to be replaced with a statue of Black civil rights pioneer Barbara Johns, on Capitol Hill in Washington, U.S., December 21, 2020. REUTERS/ Ken Cedeno

The spot in the U.S. Capitol's crypt where a statue of Confederate General Robert E. Lee had been, now sits empty, after the monument was removed to be replaced with a statue of Black civil rights pioneer Barbara Johns, on Capitol Hill in Washington, U.S., December 21, 2020. REUTERS/ Ken Cedeno

The spot in the U.S. Capitol's crypt where a statue of Confederate General Robert E. Lee had been, now sits empty, after the monument was removed to be replaced with a statue of Black civil rights pioneer Barbara Johns, on Capitol Hill in Washington, U.S., December 21, 2020. REUTERS/ Ken Cedeno

The spot in the U.S. Capitol's crypt where a statue of Confederate General Robert E. Lee had been, now sits empty, after the monument was removed to be replaced with a statue of Black civil rights pioneer Barbara Johns, on Capitol Hill in Washington, U.S., December 21, 2020. REUTERS/ Ken Cedeno

Soldiers carry the coffin of Late French writer Maurice Genevoix before being laid to rest in the crypt of the Pantheon mausoleum during a national tribute for Genevoix and 'Men of 14' as part of Armistice Day commemorations marking the end of World War I in Paris, France, November 11, 2020. REUTERS/Christian Hartmann/Pool

Soldiers carry the coffin of Late French writer Maurice Genevoix before being laid to rest in the crypt of the Pantheon mausoleum during a national tribute for Genevoix and 'Men of 14' as part of Armistice Day commemorations marking the end of World War I in Paris, France, November 11, 2020. REUTERS/Christian Hartmann/Pool

Soldiers carry the coffin of Late French writer Maurice Genevoix before being laid to rest in the crypt of the Pantheon mausoleum during a national tribute for Genevoix and 'Men of 14' as part of Armistice Day commemorations marking the end of World War I in Paris, France, November 11, 2020. REUTERS/Christian Hartmann/Pool

Soldiers carry the coffin of Late French writer Maurice Genevoix before being laid to rest in the crypt of the Pantheon mausoleum as part of Armistice Day commemorations marking the end of World War I in Paris, France, November 11, 2020. REUTERS/Christian Hartmann/Pool

Soldiers carry the coffin of Late French writer Maurice Genevoix before being laid to rest in the crypt of the Pantheon mausoleum during a national tribute for Genevoix and 'Men of 14' as part of Armistice Day commemorations marking the end of World War I in Paris, France, November 11, 2020. REUTERS/Christian Hartmann/Pool

Soldiers carry the coffin of Late French writer Maurice Genevoix before being laid to rest in the crypt of the Pantheon mausoleum during a national tribute for Genevoix and 'Men of 14' as part of Armistice Day commemorations marking the end of World War I in Paris, France, November 11, 2020. REUTERS/Christian Hartmann/Pool

Soldiers carry the coffin of Late French writer Maurice Genevoix before being laid to rest in the crypt of the Pantheon mausoleum during a national tribute for Genevoix and 'Men of 14' as part of Armistice Day commemorations marking the end of World War I in Paris, France, November 11, 2020. REUTERS/Christian Hartmann/Pool