This former sugarcane transport tunnel is now a portal to a lovely beach.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

The first full-scale tunnel built in America is short but scenic.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Home of an evil witch famous within southern folklore.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Most-visited and most-photographed slot canyon in the American Southwest.

Home to the deepest rift anywhere on Earth.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

A miraculous natural phenomenon known as "the spring that breathes."

One man's ambition created this psychedelic log home.

The center of the only hemisphere that awards visitors with a commemorative coin.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

Robots, lasers, and whoopee cushions, oh my!

A bizarre house filled with an astounding array of collections.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

An operating lighthouse from the 1860s.

Traditional 15th century Chinese garden in the middle of Vancouver.

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

The flock of plastic poultry is an ode to the classic comedy staple.

This painted blacktop brings the classic arcade game to life.