What type of museum is Madame Tussauds?

Madame Tussauds is a wax museum founded in London in 1835 by the French wax sculptor Marie Tussaud. One of the early main attractions was the Chamber of Horrors, which appeared in advertising in 1843. Madame Tussauds displays the waxworks of famous and historical figures, as well as popular film and television characters played by famous actors. Operated by the British entertainment company Merlin Entertainments, the museum now has locations in cities across four continents, with the first overseas branch opening in Amsterdam in 1970.

Source: Wikipedia