Three small rooms in the jungle house the most elaborate and intact murals of the Mayan world.

These enigmatic ruins continue to vex archaeologists.

It would take you approximately an hour and a half to walk to the end of Mexico's largest pier.

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

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

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

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

The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This massive swimming pool is the high tech home to the human-powered submarine races.

A celebrity from the late Cretaceous period.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

Perhaps the most scandalous statue of America's first president.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Washington's iconic carousel has a nice piece of Civil Rights history.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

Headquarters of the legendary clairvoyant's readings, spiritual hospital, and massage school.

America's first public mental health facility.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

The 10,000 Torii shrine.

This 700-year-old street food market features baby octopus and soy donuts.

Largest lake in Great Britain measured by surface area.