This MASSIVE bizarre looking structure is actually art.
Visitors walk in from the outside to this bright pink room where natural light pours through the high up red windows.
The structure is 35 metres high - just look at how small the people next to it look!
It's a new exhibition called Leviathan by an artist called Anish Kapoor.
The exhibition is in Paris, and people have said walking inside feels like being swallowed by a whale.