An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The broken skateboards that became a poignant memorial to a murdered skater.

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

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This derelict superstructure was a very important warning system for the Soviet military.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

340-foot statue built to honour the Heroes of the Soviet Union.

The deepest metro station in the world.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

An Art Nouveau building covered in animal gargoyles and grotesques.

The eerie burnt-out remains of a prominent building where 30 protestors lost their lives.

A fortress built to pacify local uprising that had a stint as a Nazi concentration camp before becoming a five-star hotel.

Ukraine's oldest operating pharmacy now offers guests a fascinating walk through apothecary history.

This unique Lady Liberty is one of the only examples of the figure sitting down.

A peculiarly shaped brass sculpture hidden in a courtyard in central Lviv

Climb to the top of the world's largest seated bronze Buddha.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

A small subculture of boat dwellers keep their traditional way of living alive at this Hong Kong Typhoon Shelter.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

This psychedelic tourist trap is a leisurely descent into madness.