Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

BDSM, 1930s Style.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.