A massive marble pedestal is all that remains of a column that towered over Constantinople for 1300 years.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

Plot your trip through the city on the sidewalk.

Red frames showcase remnants of one of New York's original subway stations.

Once America's longest-manned military fort, now an abandoned hulk.

Perhaps the most storied New York City eatery, Delmonico’s reshaped American restaurants.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

This monument is dedicated to Balto, the heroic Alaskan sled dog.

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

Historical figures from New York City's Catholic community reside in Midtown.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

A bit of retro transportation flair preserved in the world's largest department store.

This Gallo-Roman sanctuary is dedicated to Serápis, god of the underworld.

Once a thriving textile powerhouse, now a relic of what once was.

Robot jockeys ride their humped mounts to victory as part of a 21st-century twist on an ancient desert sport.

Some 20,000 dust-covered unwanted vehicles languish in the desert.

This massive piece of artwork weighs more than 250 tons, and was designed as a tribute to the first president of the United Arab Emirates.

Whitewashed mosque contains the world's largest carpet.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

These narrow stone granaries have been used to store and dry out grain for hundreds of years.

This elaborate temple was built around one of the Buddha's teeth.

Pettah's beautiful floating market was once a stinky canal in a sketchy industrial area.