This "sausage route" features gorgeous views and family-owned restaurants.

This former railroad bridge was named after the great river that once flowed below it.

La Cara del Indio honors the Taíno chief who fought bravely against the Spanish invasion of Puerto Rico.

This beachside town is home to a diverse nature reserve, multiple cays, and one of the three bioluminescent bays in Puerto Rico.

An unnatural lake in a naturally beautiful setting.

The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

This nearly abandoned "company town" is a ghost of Puerto Rico's once-lucrative sugar industry.

On this Puerto Rican island, many abandoned naval ammunition bunkers sit open while a few have been padlocked by locals as personal storage.

Years of neglect and nature took a toll on this 19th-century lighthouse.

The short hike is worth the stunning views and crystal blue waters of a secluded beach.

Puerto Rico's oldest rum producer started its 140-year-old business with "a little barrel."

An enchanting natural wonder in Puerto Rico's Camuy River Park.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

Everyone from Alan Ginsberg to The Rolling Stones has stopped by this classic dive bar.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

A spring and an enigmatic cabin lie in a ponderosa pine forest in the heart of the Desert National Wildlife Refuge.

Improbably, the largest wildlife refuge in the conterminous 48 states sits just northwest of Las Vegas, Nevada.

Pleistocene megafauna fossils are the subject of Nevada's newest state park at the northern edge of the Las Vegas metropolitan area.

A tiny slice shop hides down an unmarked hallway in a Las Vegas casino.

Decades' worth of lost and forgotten objects make up the collection of this tantalizingly odd little museum.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.