This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

The so-called "Father of Las Vegas" had the city's first telephone installed in his office in 1907.

This former lieutenant governor's home is brimming with curiosities.

An exotic wildlife habitat right off The Strip.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

A new kind of theme park for adults off the Las Vegas Strip.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Jurassic Park—A Still Life.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A Mars simulation in the southern Utah desert.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.