Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

Belly up to the bar in Cowtown, don't forget to buy some boots.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Scattered throughout London are ancient remnants of the city's former bounding wall.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

A Circus legend leaves an unexpected endowment.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Florida castle built with aluminum printing plates.

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

Once featuring over 60 miniature replicas of famous Chinese locations, the Splendid China theme park was completely abandoned and is now mostly rubble.

The highest point in Washington state is a volcano covered in glaciers.

A massive sea stack famous for its appearance in The Goonies.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

A vertically floating hemlock controls the waves and weather at Crater Lake.

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

America's most famous piece of self-built architecture.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The L.A. Zoo has a secret garden of rare bootleg cycads, a palm specimen dating back 280 million years.

Raised illegally, Reggie now lives at the Los Angeles Zoo after authorities spent years tracking him down.

Wild West history in Hollywood style.

Leave a button on the jacket of this iconic Seattle clown.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

Current docking place of the SS United States, the fastest transatlantic ocean liner.