This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

This landmark cemetery in Boston was created more than 300 years ago.

The site of Paul Revere's historic two lantern warning.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

Oldest unrestored plantation house in America that is open to the public.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

This quirky curiosity shop takes its cues from the world's bazaars.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

This popular pilgrimage site offers a hole filled with holy healing dirt.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

"I did this all while you were watching TV."

Oldest building in California still in use.

Megachurch turned Catholic church comprised of 10,000 glass panes.

$10,000 won in a poker game in 1884 allowed James Draughon to build this intriguing home.

Walk the whole Mississippi River!

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.