Places soimlostagain Wants to Go

Puerto Rico's once thriving oil company is now an abandoned wonderland of rusty steel.

This ''hidden'' 19th-century bridge played a simple, yet important role during the Spanish-American War.

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

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

Invading U.S. troops were first seen from this now-abandoned tower, leading to the Spanish-American War.

Legend has it this historic port was a popular hideout and smuggling spot for pirates.

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

The ruins of the first Spanish settlement in Puerto Rico.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This small fort played a huge role defending Puerto Rico’s capital city.

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

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

The world's brightest bioluminescent bay.

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

One of America's oldest Antarctic research bases is abandoned but still just waiting for visiting explorers.

These abandoned huts still hold the remains of an early 20th century Australian researcher's work.

The birthplace of the very first human resident born in Antarctica.

A wooden hut from the Heroic Age of Antarctic Exploration.

This abandoned Antarctic base sits nearly unchanged since it was forsaken in the 1950s, just waiting for you to visit.

One of only two civilian settlements in the desolate lands of chilly Antarctica.

One of the most extreme deserts in the world, these snow-free valleys harbor life, despite the hostile environment.

Southern Ocean waters and glacial forces transform the Antarctic ice into these stunning bridges and caves.

Antarctica's bustling metropolis, originally established by Richard E. Byrd.

This abandoned Antarctic research station is a Soviet ghost frozen in time.