Many cities have held the title, but Brazil snatched the crown from Chile in 2011.

Eccentric stone cairns built on a public New York City beach.

An annual extravaganza of Broadway theater memorabilia.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

Where the legendary Orson Welles got his theatrical start before "Citizen Kane."

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

Set sail on a small scale.

Unique antiquarian shop specializing in globes, maps, and prints.

A playground the size of a city block is a modernist monument to civic values and public housing.

New York City's only wildlife rehabilitation center treats more than 3,000 feathered and furry patients each year.

A hiking/biking/exploring trail that winds across over 140 miles of Rwandan shoreline.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

The crumbling remains of a once-grand building.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

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

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

The oldest continuously operating fish market in the United States.

This modern pedestrian bridge on the Yarra River was modeled after an Aboriginal fish trap.