The Ceramic Staircase, Victoria and Albert Museum - London, England // Designed by Frank Moody.
The Morgan Library & Museum + tenement museum!
Looks like a museum I might actually want to go see. One of the coolest museums in the world, the Natural History Museum in Paris, Grand Gallery of Evolution.
Chora Museum, Istanbul, Turkiye (best examples of Byzantine Pictoral Art in existence)
A list of the most visited museums in the United States, with pictures. For some, "the most popular" means "the best", and these are definitely .