Where the lovelorn find a home for their sentimental keepsakes.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A public work of art that also provides some relief from the summer heat.

A whimsical bridge adorned with decorative dragons.

This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.

A city park that sits on top of a freeway.

A serene temple with stunning stained glass hides in downtown Dallas.

This downtown Dallas art installation is always on the lookout.

A symbol of Texas pride.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

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

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

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

The first piece of public art dedicated to LGBT rights.

Elevated freight railway turned wildly successful urban park.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

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

Ride the subways of yesteryear.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.