The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Once home to a booming 19th-century oil town, the park now houses a World War II submarine memorial complete with a torpedo.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

The world's largest fully steerable radio telescope.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The most gigantic, swoony, intimidating trio of fingers in all of antiquity.

A refurbished locomotive from a bygone era in the middle of the Jordanian desert.

The world's oldest map of the holy land gives us a fragmented glimpse of the layout of biblical nations.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

An ancient capital city that dates back 3,000 years and harbors many surprises.

This half-forgotten fortress was constructed by the Ottoman conqueror of Constantinople.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

The ancient latrines of the Greeks, in all their public glory.

Seven early Christians were sealed into a cave where legend has it they slept unharmed for centuries.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.