This unusual lava tube spouts seawater during high surf.

This legendary urban waterfall creates a dazzling display of rainbows.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This black shoreline is made up of exploded lava particles.

An office built to look like a giant basket.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

An unassuming 13-acre park is home to over 12,000 roses.

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

Deep scars on the earth left by the Ice Age.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

Rare recess caves fill this unbelievably beautiful Ohio park.

An abandoned movie set in the desert of West Texas.

Water still flows through the oldest Spanish aqueduct in America.

The only airport with a people mover system designed by Walt Disney Imagineering.

Amazingly detailed marble cinerary urns that once held the cremains of Roman elite.

Some of the best pastries in "the Czech heritage capital of Texas" come from a gas station off I-35.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

Roadside Americana, fairy tale characters, and Austin quirkiness come together at this magical course in the heart of Texas' capital city.

A little stop along the Texas highway where Rock Hudson, Elizabeth Taylor, and James Dean stayed while shooting the 1955 film "Giant."

A "Texanic" (gigantic Texas) collection of Art Deco architecture at Dallas' historic Fair Park.

Minimalist modern art on a repurposed military base in rural Texas.

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