Pompeii - this is actually a cast of the void left by a person who was unfortunately in the wrong place at the wrong time when Mt. Vesuvius erupted that fateful day... Horrifying, and I cannot imagine the terror.
Passageway, Skara Brae, Orkney Islands. Skara Brae is a stone-built Neolithic settlement consisting of eight clustered houses, and was occupied from roughly 3180 BEC - 2500 BCE. Older than Stonehenge and the Great Pyramids, it has been called the "Scottish Pompeii" because of its excellent preservation.