Extremely isolated Silk Road caravanserai in the middle of nowhere.

Be careful not to get trampled at this lively two thousand-year-old market.

This ancient Silk Road outpost overlooking the Wakhan Valley is miraculously still standing.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Ancient barriers wrap around what was once an important stop along the Silk Road.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

A trove of ridiculously valuable prints and manuscripts under one roof.

An ancient rogue artist community hidden next to one of the world's most glitzy and glamorous cities.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

This mountain trail inspired Nietzsche to complete his magnum opus.

A place to see how French aristocrats lived in the early 1900s.

This massive blockhead sculpture hides an entire library.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

A medieval military street hidden beneath a charming French fishing village.

The construction of a tram line unveiled hidden remnants of the old medieval city.