Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

A strange, heartwarming, decades-old declaration of love on a New Hampshire roadside.

This colonial mansion has been home to a staggering number of American historic figures.

This Soviet-era athletic and recreation facility is the highest ice skating rink in the world.

This Florida arena, once host to "the fastest game in the world," has sat empty for 25 years.

Electronic inventions that resulted in products and systems we use every day are on display in this labor-of-love museum.

Make your reservation to have coffee with some kitties.

An 80-year-old house built out of newspapers.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

This weekly market in the remote oasis city of Hotan still has the atmosphere of the old Silk Road.

A small obelisk marks the spot where Captain Sam Greele was killed by a falling tree.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

Nicknamed Kazakhstan's Grand Canyon, this natural wonder lies east of Almaty near the Chinese border.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

The ancient remains of this natural fortress can still be found along the Silk Road looking surprisingly preserved.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.