This field of half-buried stone crosses was the burial place of a sect of heretical gnostics.

Dedicated to the god Dionysus, this theatre was used for both musical and theatrical performances.

This open air archeological site houses almost as much wildlife as it does classical religious artifacts.

What once sat in the world’s spotlight is today a largely disused ghost complex.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

A closer look at this somewhat faded hotel by the Corinth Canal reveals the architectural undertones of a genius.

Built by the Ancient Greeks, this chariot bridge is still in use today.

This building was once the most magnificent mansion in Nafplio.

A staircase made of gravestones leads up to this church built into a giant rock.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

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

Quite simply the largest tree in the world (by volume).

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

This network of roads is one of the most unique Etruscan creations ever discovered.

A historical puzzle lies at the origins of this structure.

Atop this electronic store resides a massive fighter jet.

The remnants of a WWI naval mine that once terrorized the country now decorates a street.

A massive explosion that leveled hundreds of buildings in the city of Leiden is remembered by a waterside plaque.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

People have been placing babies on these lilies for photoshoots since the Victorian era.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

An ancient Egyptian temple sits within a modern European museum.

Amsterdam's former hotspot for public executions and dissections.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.