Festivalgoers attend a flag party during Sziget music festival on an island in the Danube River in Budapest, Hungary, August 11, 2017. REUTERS/Bernadett Szabo

Members of the Utca-SZAK street theatre group perform, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, May 2, 2021. Picture taken May 2, 2021. REUTERS/Bernadett Szabo

Aerial acrobat, Eszter Kovacs, performs during a performance of the Utca-SZAK street theatre group, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, May 2, 2021. Picture taken May 2, 2021. REUTERS/Bernadett Szabo

Members of the Utca-SZAK street theatre group perform, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, May 2, 2021. Picture taken May 2, 2021. REUTERS/Bernadett Szabo

Members of the Utca-SZAK street theatre group perform, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, May 2, 2021. Picture taken May 2, 2021. REUTERS/Bernadett Szabo

Aerial acrobat, Eszter Kovacs, performs during a performance of the Utca-SZAK street theatre group, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, May 2, 2021. Picture taken May 2, 2021. REUTERS/Bernadett Szabo

Visitors watch a seal the Budapest Zoo as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A woman relaxes at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

Bathers relax at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A man relaxes at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A woman relaxes at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A man relaxes at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

An employee checks the temperature at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

Bathers relax at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

Bathers swim at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have COVID-19 immunity card, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

Employees check the COVID-19 immunity cards at the Szechenyi thermal bath as the coronavirus disease (COVID-19) restrictions are eased for those who have them, in Budapest, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A one-week-old asian elephant is seen with his mum Angele at Budapest Zoo, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A one-week-old asian elephant is seen with his mum Angele at Budapest Zoo, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A one-week-old asian elephant is seen with his mum Angele at Budapest Zoo, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A one-week-old asian elephant is seen with his mum Angele at Budapest Zoo, Hungary, May 1, 2021. REUTERS/Bernadett Szabo

A construction crane is seen next to a residential park in Budapest, Hungary, April 28, 2021. Picture taken April 28, 2021. REUTERS/Bernadett Szabo

Newly built buildings are seen at a residential park in Budapest, Hungary, April 28, 2021. Picture taken April 28, 2021. REUTERS/Bernadett Szabo

A person works in a newly built apartment at a residential park in Budapest, Hungary, April 28, 2021. Picture taken April 28, 2021. REUTERS/Bernadett Szabo

Newly built buildings are seen at a residential park in Budapest, Hungary, April 28, 2021. Picture taken April 28, 2021. REUTERS/Bernadett Szabo

Newly built buildings are seen at a residential park in Budapest, Hungary, April 28, 2021. Picture taken April 28, 2021. REUTERS/Bernadett Szabo

People work at a newly built residential park in Budapest, Hungary, April 28, 2021. Picture taken April 28, 2021. REUTERS/Bernadett Szabo

A person works in a newly built apartment at a residential in Budapest, Hungary, April 28, 2021. Picture taken April 28, 2021. REUTERS/Bernadett Szabo

Aerial acrobat, Eszter Kovacs, member of the Taurin Circus Group, practices at home, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, April 26, 2021. Picture taken April 26, 2021. REUTERS/Bernadett Szabo

Aerial acrobat, Eszter Kovacs, member of the Taurin Circus Group, practices with her cat, Dagi (Fatty) at home, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, April 26, 2021. Picture taken April 26, 2021. REUTERS/Bernadett Szabo

Aerial acrobat, Eszter Kovacs, member of the Taurin Circus Group, adjusts her costume at home, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, April 26, 2021. Picture taken April 26, 2021. REUTERS/Bernadett Szabo

Aerial acrobat, Eszter Kovacs, member of the Taurin Circus Group, practices at home, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, April 26, 2021. Picture taken April 26, 2021. REUTERS/Bernadett Szabo

Aerial acrobat, Eszter Kovacs, member of the Taurin Circus Group, practices at home, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, April 26, 2021. Picture taken April 26, 2021. REUTERS/Bernadett Szabo

People enjoy the evening outside a bar after the Hungarian government allowed the reopening of outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

People enjoy the evening outside a bar after the Hungarian government allowed the reopening of outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

People enjoy the evening outside a bar after the Hungarian government allowed the reopening of outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

People enjoy the evening on a street after the Hungarian government allowed the reopening of outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

People enjoy the evening outside a bar after the Hungarian government allowed the reopening of outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

People enjoy the evening in front of a bar after the Hungarian government allowed the reopening of outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

People enjoy the evening outside a bar after the Hungarian government allowed the reopening of outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Guests enjoy the sunny weather as they sit in front of a bistro after the Hungarian government allowed to reopen outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Guests enjoy the sunny weather as they sit in front of a restaurant after the Hungarian government allowed to reopen outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Guests enjoy the sunny weather as they sit in front of a cafe after the Hungarian government allowed to reopen outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Guests enjoy the sunny weather as they sit in front of a restaurant after the Hungarian government allowed to reopen outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Guests enjoy the sunny weather as they sit in front of a cafe after Hungarian government allowed to reopen outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Guests enjoy the sunny weather as they sit in front of a restaurant after the Hungarian government allowed to reopen outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Guests enjoy the sunny weather as they sit in front of a restaurant after the Hungarian government allowed to reopen outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Guests enjoy the sunny weather as they sit in front of a cafe after the Hungarian government allowed to reopen outdoor terraces, as the spread of the coronavirus disease (COVID-19) continues in Budapest, Hungary, April 24, 2021. REUTERS/Bernadett Szabo

Hungarian herdsman Gergo Tomori, 23, waves his whip at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Hungarian herdsman Antal Kis, 35, walks with his cattle at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Hungarian herdsman Antal Kis, 35, walks with his cattle at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Hungarian herdsman Balazs Fegyverneki, 35, walks with his cattle at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Gray cattle are seen at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Gray cattle are seen at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Gray cattle are seen at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Hungarian herdsman Balazs Fegyverneki, 35, walks with his dog before the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Gray cattle in the paddock wait for the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Two gray cattle fight each other at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Hungarian herdsman Balazs Fegyverneki, 35, watches the grey cattle at the start of the new grazing season at the Great Hungarian Plain in Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Gray cattle are seen at the start of the new grazing season at the Great Hungarian Plain in Hortobagy near Balmazujvaros, Hungary, April 23, 2021. REUTERS/Marton Monus

Magician Balazs Gyertyan, member of the Taurin Circus Group, practices at home with his dog Lupin, amid the coronavirus disease (COVID-19) pandemic, in Budapest, Hungary, April 20, 2021. Picture taken April 20, 2021. REUTERS/Bernadett Szabo