The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

For decades these polar bears have roamed all around a Nashville neighborhood.

A small poultry graveyard in the courtyard of a popular Key West watering hole.

The highway's southernmost spot is a beloved local attraction.

A historic presidential getaway on the continental United States' southernmost island.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

The museum chronicling a treasure hunter's dream, fulfilled.

The largest freshwater lake in the Florida Keys.

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

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

An underwater statue of Christ blesses the depths off Key Largo.

An island in the middle of a lake, in the middle of a volcano, in the middle of a bigger lake, in the middle of a bigger island, in an archipelago, in the Pacific Ocean.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

This iconic clock tower is the largest in the Philippines.

After spending more than a century on the ocean floor, this shipwrecked column is finally resting atop solid ground.

The colorful, smiling concrete silos of Vancouver.

This Costa Rican chapel is the most metal church in the world, literally.

An important Mayan religious and trading center dating back to 200 BC.

These enigmatic ruins continue to vex archaeologists.

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

One of Mexico's least-visited archaeological sites is tucked away inside a theme park.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.