The grounds of former plantations where abolitionist Harriet Tubman spent her youth enslaved are now a museum to her incredible life.

Atop an active stratovolcano, two lakes separated by a narrow strip of land.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

The remains of Abó, Gran Quivera, and Qurai are monuments to the long, complicated history of the Indigenous people of the Southwest.

This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

Ancient pueblos built into the base of a natural canyon wall.

Right beyond the Uzbekistan-Tajikistan border lies the oldest human settlement in Central Asia.

The wartime boat shelter now doubles as an underground concert hall where musicians play on rafts along the waterway.

Stained glass windows bathe this botanical garden in cosmic light.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

A time capsule from 1934 Rhodesia, showing the grace and disgrace of a bygone era.

An elegant church is home to a remarkably detailed mosaic floor depicting the Garden of Eden.

The scorched Lisbon church that survived two earthquakes and a massive fire.

A Japanese-era military tunnel is now a psychedelic art exhibit.

The lost library of Alexandria, revived as a spearhead of cultural preservation.

This is the sewer drain that was the inspiration for the opening scene of Stephen King’s classic novel “IT”.

One of England’s oldest and most haunted inns may have inspired the legend of Sweeney Todd.

Where Elvis Presley received his first Army buzz cut.

This stunningly massive housing complex is a go-to filming location for dystopian sci-fi cinema.

The Cape of Good Hope is not quite as low as you can go on the African continent, but it's still geographically significant.

One of Manchester’s museums has gathered and preserved British political paraphernalia covering over 200 years.