New York City's smallest piece of private property.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

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

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

These "50 Fortresses" have been unearthed in the ancient oasis of Khwarezm.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

18m long sarcophagus of a constantly growing dead prophet.

Looking for a unifying history, Uzbekistan finds its answer in a 14th Century Turco-Mongol conqueror... despite the fact he wasn't Uzbek.

A tiny, unassuming park in Tampa that belongs to the Republic of Cuba.

Ancient burial grounds of the wealthy.

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."