Orsay Museum

The museum has a glass floor on which visitors walk.

An excerpt from the article 18 facts about Orsay Museum

Beneath it is a 1:100 scale model created by French set designer Richard Peduzzi, depicting an aerial view of the Paris Opera and its surroundings. This installation allows visitors to understand the urban planning of Paris at the time. It is one of the Muse's most popular attractions.