Chamber of horrors

The Chamber of Horrors was one of the attractions at Madame Tussauds in London, being an exhibition of waxworks of notorious murderers and other infamous historical figures. The gallery first opened as a 'Separate Room' in Marie Tussaud's 1802 exhibition in London and quickly became a success as it showed historical personalities and artifacts rather than the freaks of nature popular in other waxworks of the day. It closed permanently in April 2016.

The forerunner of Tussaud's Chamber of Horrors was the Caverne des Grands Voleurs (the Cavern of the Great Thieves) which had been founded by Dr Philippe Curtius as an adjunct to his main exhibition of waxworks in Paris in 1782. Here Curtuis displayed wax figures of notorious French criminals who had been executed, as well as members of the French royal family and aristocracy who had been guillotined during the Revolution.

When Marie Tussaud moved to London in 1802 to set up her own exhibition at the Lyceum Theatre she brought some of these figures with her and set them up in a separate gallery; and when later she toured her exhibits around the country she maintained this division in her exhibition using a 'Separate Room' to display them in. The exhibits at this time included the heads of King Louis XVI and Marie Antoinette, as well as Madame du Barry, Marat, Robespierre, Hébert, Carrier and Fouquier-Tinville in addition to models of a guillotine and the Bastille and the Egyptian mummy from Curtuis' collection.

...
Wikipedia