This sculpture is one of many stunning features along Tampa’s Riverwalk.

A well-preserved example of an early industrial operation in the northeastern United States.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

“Invented in Key West, Perfected in Brooklyn."

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Sniff the Titan Arum's rotting flesh.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

Dramatic river bend surrounds a natural red-rocked pedestal.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

The flagship building of an early national restaurant chain is a superb example of terra cotta art.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

All aboard the world's longest miniature railway.

A Victorian-style home known as the “Castle on the Hill.”

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

This diesel train serviced the Brooklyn waterfront for more than three decades.

Wine bottle sculpture with a ship's stateroom inside.

There must be a pun in this haystack somewhere...

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

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

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.