Frida Kahlo's childhood home, now a museum of her life and works.

The home of half the world's population of critically endangered mountain gorillas.

The burial ground of four Buganda monarchs was nearly destroyed by a devastating fire.

Perched above the bustling town of Kerak is a sprawling, ruinous castle that has witnessed nearly a millennia of Levantine history.

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

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

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

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

An Inca spa, military outpost or maybe… both?

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

The world's tallest palm trees look like the whimsical kind of plant you'd find in a Dr. Seuss story.

This 16-foot, 6-ton statue in the singer's hometown doesn't actually look like her.

An ancient city hidden in the heart of the Sierra Nevada mountains.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A more chill but no less fascinating version of the famous ancient archeological site.

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