Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

A multimedia experience that chronicles the atrocities of racism.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

Golden Gate Park's historic collection of plants.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Underwater restaurant at the coral reefs of Eilat.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

Neighborhood in Jerusalem is home to the ultra-orthodox haredim.

This "Jewish Sistine Chapel" was designed to reinvigorate Judaism's artistic legacy but was almost lost to misguided restoration.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This Chinese-style quartz sundial was saved in its final hour.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

A downtown park built on top of unclaimed graves.

Ancient serpentine sacrifice holder that has stood the test of time.