The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.

Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

This reconstructed ancient fort was home to one of the few horse training rings in the Roman Empire.

Get hands on with the technological marvels of the Classical world.

Classical ruins that remember ancient Rome's presence in Africa.

This subterranean spot might be the epitome of Japan's baroque, retro coffee houses.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

The oldest Roman lighthouse still in use.

This ancient Spanish castle sits high upon a hilltop.

An architect transformed this abandoned cement factory into his castle-like workshop.

Stunning Roman aqueduct used for 1900 years and still standing.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

The largest known Ancient Egyptian obelisk.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

Rare collection of medieval books under lock and key.

Now nearly dry, this lake is said to be the ancient home of the Lady of the Lake, and was once thought to be bottomless.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.