This little-known, 35,000-specimen collection in Greece is a lepidopterist's dream.

This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

This fairytale-looking castle is a wonderful example of Greek neo-Gothic architecture

This seaside sanctuary was once one of the most important religious sites for women in ancient Greece.

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Ruins of a 13th-century fortress perched above a breathtaking Mediterranean bay.

These docile dragons are ideal inhabitants for the conservatory greenhouses.

A marine aquarium with an astounding variety of fish hides in the basement beneath the famous Palm House.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

Its collection includes a broad array of social, geographic, graphic design, and political history.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The best place in the world to buy tinned fish.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This early version of the guillotine was used to execute the man responsible for its construction.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

An ancient octagonal weather station named for the eight Greek gods of wind.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

A crushed gate and giant bronze head serve as a reminder of Greece's fight for freedom.

A sharp sculpture made of thousands of pieces of jagged glass.

This once architecturally advanced housing complex is now a haven for squatters that still bears the scars of war.

A church that bred legends, and served as an inspiration for the Da Vinci Code.