In The Great Muppet Caper (1981), which London museum houses the diamond targeted by the plot?

The diamond targeted in The Great Muppet Caper (1981) is housed at the British Museum.

The film follows Kermit, Fozzie, and Gonzo as journalists traveling to London to investigate a valuable jewel. The plot centers on the theft of the Baseball Diamond, a fictional gem connected to the wealthy Lady Holiday and her family.

Jim Henson directed the film, the second theatrical feature starring the Muppets. Charles Grodin plays Nicky Holiday, while Diana Rigg plays Lady Holiday. The story combines a conventional jewel-heist structure with fourth-wall jokes, musical numbers, and mistaken identities.

The British Museum is a real institution in London, but the diamond and the film's robbery are fictional. Viewers can also confuse the setting with the Tower of London, another famous London landmark associated with valuable objects, yet the movie specifically uses the British Museum.