The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

An ancient necropolis of magnificent tombs.

Legend holds that the Ancient Greek goddess of love once bathed in the waters of this grotto.

The initials "GW" mark where one of Scotland's most important Protestant martyrs was burned at the stake.

Look up from the busy streets to discover how time is kept!

This rowhouse doubles as one of the most photographed spots in the nation's capital.

This old building has served as a bank, post office, library, and city hall.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

An architectural marvel that combines Gothic architecture with Indian elements.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

If you don't look closely, you might mistake this sculpture for just another passenger waiting at the airport.

A monument to one of the few Olympic flames ever to be lit outside of the host city.

The beginning of the historic Iditarod Trail connecting the Alaskan cities of Seward and Nome.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

The world's longest continuously running show has played at this small West End theater since 1974.

An out-of-the-way wildlife haven with a rich and storied past of harboring thousands of fugitive slaves, or "Maroons" during the mid 1800s.

Located in the Horniman Circle area, this church marks the historical Zero Point of Mumbai.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

The National Park Service’s best-kept secret with views that rival any in D.C.

From atop a hill at the center of Cape Town, a cannon has been signalling the time since 1806.

This breathtaking island on Rwanda’s Lake Kivu is a haven for thousands of fruit bats.

This Annapolis home was built by one of the signers of the Declaration of Independence.