A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

An extravagant monument to an extravagantly unpopular Emperor.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

Four cars from the old system were once on display, but were removed in 2014.

The highest rapid transit station in the world.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

Waterway populated with abandoned projects, including a submarine.

This small, hidden cove is home to abandoned boats.

Hidden beneath the streets of London is a secret subway that only carried mail.

The abandoned coal loading dock is a canvas for unsanctioned art.

For 20 years, local pumpkins have met their fate on the iron fence surrounding this Cobble Hill home.

Love is in the air along the small street in Brooklyn.

A decommissioned military complex that's now a modern industrial park.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

An institution dedicated to the towering buildings that make up skylines in New York City and around the world.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The largest outdoor art gallery in the Northwest United States.

A modern zoetrope on the New York City subway.

19th century cemetery hidden in Brooklyn's Prospect Park.

New York's oldest concrete structure is being preserved thanks to the gentrification of Whole Foods.

The unassuming structure was part of a Major League Baseball stadium.