Venture into the hideout of one of Hong Kong's legendary pirates.

Abandoned British military fortifications, slowly being reclaimed by nature.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

Enormous burial mounds of ancient emperors.

An ancient fortification lives on in this Chinese city.

A marvel of Byzantine engineering under the streets of Istanbul.

One of the newest mosques in a city filled with thousands.

Climb a set of vertiginous stone steps to the top of this impressive ancient edifice.

The ornate miniature mansions were built for Istanbul's feathered residents.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A meow-velous tribute to a beloved street cat, made famous on the internet.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

Step back in time and witness the fall of Constantinople.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

A fountain standing as a testament to a doomed alliance.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

In the back of a nondescript sports bar is a museum-worthy mural by legendary cartoonists.

Peek through the gates at this oasis from the city, full of Old English charm.

Unique antiquarian shop specializing in globes, maps, and prints.