Madame Tussauds is the oldest wax museum in the world, founded in London by Marie Tussaud. It features wax figures of famous people from various fields including movie stars, politicians, athletes, and musicians. Madame Tussauds locations can now be found in nine major cities around the world. The museums showcase figures from different categories such as world leaders, celebrities, and characters from popular movies. The author's favorite wax figure is of Freddie Mercury, the lead singer of the legendary rock band Queen.