The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This ancient trail has claimed the lives of over 2,000 people.

This whimsical fountain pays tribute to Toronto's four-legged friends.

The fading, forgotten remains of a once bright and booming factory.

Ten shipwreck-shaped chalets lie along the sand dunes on Namibia’s Skeleton Coast.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Every year, the colorful murals of Montreal get a complete makeover.

Monks turned this mountain into a temple by digging grottoes, tunnels, and a huge pagoda-like hall.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

This NASA test station is home to some of the world’s largest and most powerful space environment simulation facilities.

This collection of neon icons is preserving Arizona's history, one sign at a time.

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This tiny structure was built by the creator of the Brooklyn Bridge.

A riverside park built around the ruins of a massive dam that collapsed in 1909.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

A prehistoric rock shelter that's literally in someone's backyard.

It's believed King John of England stayed at this 13th-century castle before riding off to sign the Magna Carta.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.