London's smallest police station is barely the size of a phone booth.

The remains of Crystal Palace Great Exhibition of 1851.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Started as a kitchen garden, now the second largest botanical garden in the world.

A slice of central Asia in the middle of Berlin.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

Atop a small Armenian hilltop adorned with many forms, and carvings, these stones tell a whimsical tale from a fictional world.

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

This Soviet-era "closed town" was a top secret uranium producer often left off of maps.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.