One of the greatest museums on the planet, a repository of astounding artifacts from throughout human history all around the globe, from the Rosetta Stone to the Parthenon Marbles to an Easter Island moai and much, much, much more
Until the early 19th century, London did not have any hotels, only coaching inns, which looked remarkably like modern multi-story motels, the rooms opening off outdoor corridors. The last (partially) surviving coaching inn is The George Inn, though only its pub component is still active.