This secluded walkway overlooks a magnificently wild London green space.

Artists and musicians now rule over this former rail station.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

A tongue-in-cheek arcade where the games are based on everyday life.

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

A kaleidoscopic warehouse-maze of handmade neon signs.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

This church is named for one of the most dramatic tales in the early Christian church.

This garage is frozen in the late 1990s, full of rare and untouched cars and motorcycles.

Hidden beneath a restaurant, underground tunnels tell the story of Malta’s tragic role in World War II.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A collection of old neon signs from all over Poland line a secluded courtyard.

Relive a Polish uprising via an enormous, century-old cyclorama.

A striking public sculpture representing the period of martial law in Communist Poland.

The silly symbol for an underground protest group is now scattered around the city.

This German fountain of a legendary apple wine-loving drink thief will spit on you.

Fantastic views and thousands of love locks.

A rare chance to ride one of the few continuous elevators still in operation.