When visiting an art museum, you most likely are there to observed the works of art featured in the museum. However, at the John Michael Kohler Arts Center in Sheboygan, Wisconsin, the bathrooms themselves are actually works of art. Creating permanent art in the restrooms "begun in 1974 as a means of supporting artistic exploration by providing artists with access to industrial technologies".
Annually, a group of selected artists collaborate with Kohler Co. and actually handcraft the fixtures each step of the way. Each bathroom represents different periods and technologies. Photos below are from The Art Museum Toilet Museum of Art.
The Social History of Architecture:
Sheboygan Men's Room:
The Women's Room:
Sources: John Michael Kohler Arts Center
The Art Museum Toilet Museum of Art