The last four extravagant street signs of London's historic banking street.

This Underground station has been a popular filming location for decades, even before it closed.

A pair of club-wielding guardians stand watch over London's first public clock to feature a minute hand.

What might be the oldest living tree in London has survived fires, bombings, and estate agents.

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A safari-themed castle in the South African bush with the largest maze in the southern hemisphere.

This airport also offers travelers the chance to view thousands of years of Turkish history.

This famous city eluded concrete detection until the early 2000's.

The only Roman honorific column in Istanbul.

Homesick Syrian refugees head to this restaurant for a taste of Damascus.

A tiny park in the middle of some big power politics.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

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

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

A fountain standing as a testament to a doomed alliance.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

A sixth-century Byzantine cistern hidden below a modern carpet store.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

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

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