The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This sculpture is an instrument played by the swell of the seas.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

These azure waters were thought to lead to the Mayan Underworld.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

These tracks are believed to be from a panicked dinosaur stampede.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The world's largest collection of ships in bottles.

A magical place that lets you play in and explore the world of Studio Ghibli.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

A white oak with property rights.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The fairy tale castle of the "fairy-tale king."

A small but immensely extravagant palace built by the "Night King."

The beautiful baroque library of the Hapsburg empire.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A terrific purveyor of natural history objects and curios.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A church of bones, decorated with 40,000 human skeletons.