Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

This splendid tomb may look fantastic, but there's nothing in it...

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

An unexpected desert oasis in South America.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

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

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