A work of art, genius and incredible effort, half of this replica structure appears to hang in mid-air, seeming at once a perfect aesthetic fit for its surroundings and completely disconnected from the laws of physics.

British artist Alex Chinneck and his crew spent over 500 hours and had to construct a 4-ton counterweight to balance this faux building in the sky. What appears to be solid stone is in fact a steel-framed copy of an historic structure also found at Covent Garden (the original is nearly 200 years old), held in place by the innocuous-looking green structure with red wheels pushed up against one side.

Chinneck is well known for his architecture-centric optical illusions, with this particular piece created as a play on the area’s “performance culture” – its proximity to theaters and performance spaces.

The construction process required a painstaking attention to historical details and materials in addition to grafting the appearance of age, wear and tear onto the fake structure. Another significant challenge: the seemingly haphazard breaking and slicing of everything from stones to windows and their frames.

From the artist: “The hovering building introduces contemporary art to traditional architecture, performing a magic trick of spectacular scale to present the everyday world in an extraordinary way. My objective was to create an accessible artwork that makes a harmonious but breath-taking contribution to its historic surroundings, leaving a lasting and positive impression upon the cultural landscape of Covent Garden and in the minds of its many visitors.”