The sailing ship "Misconceivable" by Austrian artist Erwin Wurm is seen at the Middelheim Museum in Antwerp, Belgium, June 1, 2015. REUTERS/Francois Lenoir TPX IMAGES OF THE DAY

A life-sized sailing boat mock-up is placed on the rooftop of a hotel in Vienna, Austria, May 6, 2015. The yacht is an art installation called "Misconceivable" by Austrian contemporary artist Erwin Wurm. REUTERS/Heinz-Peter Bader

A life-sized sailing boat mock-up is placed on the rooftop of a hotel in Vienna, Austria, May 6, 2015. The yacht is an art installation called "Misconceivable" by Austrian contemporary artist Erwin Wurm. REUTERS/Heinz-Peter Bader

An art installation called "Misconceivable" is fixed onto the roof of a hotel in Vienna June 20, 2012. The installation of the lifesize yacht is an arts project by Austrian artist Erwin Wurm. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: SOCIETY)

An art installation called "Misconceivable" is fixed onto the roof of a hotel in Vienna June 20, 2012. The installation of the lifesize yacht is an arts project by Austrian artist Erwin Wurm. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: SOCIETY)

An art installation called "Misconceivable" is fixed onto the roof of a hotel in Vienna June 20, 2012. The installation of the lifesize yacht is an arts project by Austrian artist Erwin Wurm. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: SOCIETY)

An art installation called "Misconceivable" is fixed onto the roof of a hotel in Vienna June 20, 2012. The installation of the lifesize yacht is an arts project by Austrian artist Erwin Wurm. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: SOCIETY TPX IMAGES OF THE DAY)

An art installation called "Misconceivable" is fixed onto the roof of a hotel in Vienna June 20, 2012. The installation of the lifesize yacht is an arts project by Austrian artist Erwin Wurm. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: SOCIETY)

Austrian artist Erwin Wurm gestures during the opening ceremony of his 'Keep a cool head' exhibition in Moscow June 24, 2008. REUTERS/Denis Sinyakov (RUSSIA)

A visitor walks by sculptures by Austrian artist Erwin Wurm during his 'Keep a cool head' exhibition in Moscow, June 24, 2008. REUTERS/Denis Sinyakov (RUSSIA)

A visitor attends the 'Keep a cool head' exhibition by Erwin Wurm in Moscow, June 24, 2008. REUTERS/Denis Sinyakov (RUSSIA)

A visitor walks by sculptures by Austrian artist Erwin Wurm during his 'Keep a cool head' exhibition in Moscow, June 24, 2008. REUTERS/Denis Sinyakov (RUSSIA)

Visitors walk by 'Keep a cool head' exhibition by Austrian artist Erwin Wurm in Moscow, June 24, 2008. REUTERS/Denis Sinyakov (RUSSIA)

A visitor walks near 'Adorno as Oliver Hardy in the Bohemian Girl (1936) and the Burden of Desperation' by contemporary Austrian artist Erwin Wurm, which is presented at the 33rd International Contempory Art Fair (FIAC) at the Grand Palais museum in Paris, October 29, 2006. REUTERS/Regis Duvignau (FRANCE)

Visitors walk by 'The artist who swallowed the world when it was still a disc', a resin, acrylic and fabric sculpture by Austrian artist Erwin Wurm, which is presented at the 33rd International Contempory Art Fair (FIAC) at the Grand Palais museum in Paris, October 29, 2006. REUTERS/Regis Duvignau (FRANCE)

People read newspapers in front of the installation "House Attack" by Austrian artist Erwin Wurm on the facade of the Museum of Modern Arts in Vienna October 18, 2006. REUTERS/Leonhard Foeger (AUSTRIA)

A tourist walks next to the installation "House Attack" by Austrian artist Erwin Wurm on the facade of the Museum of Modern Arts in Vienna October 18, 2006. REUTERS/Leonhard Foeger (AUSTRIA)

People ride segways in front of the installation "House Attack" by Austrian artist Erwin Wurm on the facade of the Museum of Modern Arts in Vienna October 18, 2006. REUTERS/Leonhard Foeger (AUSTRIA)

A tourist looks at the installation "House Attack" by Austrian artist Erwin Wurm on the facade of the Museum of Modern Arts in Vienna October 18, 2006. REUTERS/Leonhard Foeger (AUSTRIA)

Tourists sit in a garden next to the installation "House Attack" by Austrian artist Erwin Wurm on the facade of the Museum of Modern Arts in Vienna October 18, 2006. REUTERS/Leonhard Foeger (AUSTRIA)

A tourist looks at the installation "House Attack" by Austrian artist Erwin Wurm on the facade of the Museum of Modern Arts in Vienna October 18, 2006. REUTERS/Leonhard Foeger (AUSTRIA)

Austrian artist Erwin Wurm stands in front of the Museum of Modern Art to promote his exhibiton "Keep a cool Head" in Vienna October 17, 2006. Wurms most recent prominent work is the object ?House Attack?, installed on MUMOK's external facade. REUTERS/Leonhard Foeger (AUSTRIA)

A man walks past Austrian artist Erwin Wurm's "Telekinetically Bent VW-Van" (2006) on display by Galerie Krinzinger, Vienna, at the Art 37 in Basel, June 13, 2006. The international art show Art 37 Basel takes place from June 14-18. REUTERS/Stefan Wermuth (SWITZERLAND)

A visitor (R) to the Museum of Contemporary Art (MCA) looks at the sculpture of a Porsche Carrera sports car, swollen beyond its usual shape, by Austrian artist Erwin Wurm, Sydney November 23, 2005. The car is part of an exhibit of everyday objects including a couch, a sweater and a car that deal with the idea of transformation. The exhibit titled 'Erwin Wurm : Glue Your Brain', runs until February 2006 and is Wurm's first solo show in Australia.

A visitor (R) to the Museum of Contemporary Art (MCA) looks at the sculpture of a Porsche Carrera sports car swollen beyond its usual shape by Austrian artist Erwin Wurm in Sydney November 23, 2005. The car is part of an exhibit of everyday objects including a couch, a sweater and a car that deal with the idea of transformation. The exhibit titled 'Erwin Wurm:Glue Your Brain', runs until February 2006 and is Wurm's first solo show in Australia. REUTERS/Will Burgess

A gallery worker walks past the sculpture of a Porsche Carrera sports car swollen beyond its usual shape by Austrian artist Erwin Wurm at the Museum of Contemporary Art (MCA) in Sydney November 23, 2005. The car is part of an exhibit of everyday objects including a couch, a sweater and a car that deal with the idea of transformation. The exhibit titled 'Erwin Wurm:Glue Your Brain' runs until February 2006 and is Wurm's first solo show in Australia. REUTERS/Will Burgess

A visitor (R) to the Museum of Contemporary Art (MCA) looks at the sculpture of a Porsche Carrera sports car, swollen beyond its usual shape, by Austrian artist Erwin Wurm, Sydney November 23, 2005. The car is part of an exhibit of everyday objects including a couch, a sweater and a car that deal with the idea of transformation. The exhibit titled 'Erwin Wurm : Glue Your Brain', runs until February 2006 and is Wurm's first solo show in Australia. REUTERS/Will Burgess

A worker paints a wall outside of Austrian Erwin Wurm's work of art during the preparations of International Biennial of Contemporary Art of Seville in Seville. A worker paints a wall outside of Austrian Erwin Wurm's work of art named 'Fat house. I love my time, I don't like my time' during the preparations of International Biennial of Contemporary Art of Seville in Art Contemporary Centre of Seville September 29, 2004. International Biennial of Contemporary Art of Seville will run from October 3 until December 5. REUTERS/Marcelo Del Pozo

A worker carries a ladder inside of Austrian Erwin Wurm's work of art during the preparations of International Biennial of Contemporary Art of Seville in Seville. A worker carries a ladder inside of Austrian Erwin Wurm's work of art named 'Fat house. I love my time, I don't like my time' during the preparations of International Biennial of Contemporary Art of Seville in Art Contemporary Centre of Seville September 29, 2004. International Biennial of Contemporary Art of Seville will run from October 3 until December 5. REUTERS/Marcelo Del Pozo