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

An 18-meter-long sarcophagus of a constantly growing dead prophet.

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

Prowl through this sprawling bazaar under a massive Soviet-era dome for delicious eats.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

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

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

Read a book next to a Midtown waterfall.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

An art installation commemorates journalist Nellie Bly's undercover reporting inside a New York asylum.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A sculptural commentary on capitalism pokes up from the East River.

One of only two commuter aerial tramways in the United States.

A crumbling hospital from the 1850s on Roosevelt Island.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

Before online banking and smartphone apps, there was "commuter banking" in the subway in Downtown Brooklyn.

This 220-year-old house is a reminder of New York City's Dutch past.

The East Village tenement from the cover of Led Zeppelin’s 1975 album has a tea shop on the ground floor.

There are owls with glowing eyes in Herald Square.

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

The lead horse on a Disneyland merry-go-round that is older than the park itself.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A majestic hotel for dreamers rises from the center of a fairytale wood.