View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

Luminaries of all stripes have sipped strong Greek coffee at this cafe since 1839.

A Byzantine-era church hidden in a wooded area below the Acropolis.

Where commuters walk through remnants of an ancient Greek necropolis.

This little Greek plateau is home to thousands of rustic, white-sailed windmills.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

According to legend, this ancient column contains healing properties.

An often overlooked ancient site in downtown Athens with substantial history (and nature).

These caves secretly held national treasures during World War II.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

This cheese shop also houses a museum devoted to Dutch dairy.

Boats and fish both find their way through this massive hydroelectric structure.

A narrow fjord-like lake, the third-deepest in the United States, runs for over 50 miles into the Cascades of Washington state.

Monasteries on rock pillars, once accessible only by frayed ropes.

This private residence was the template for one of the most beloved television homes of all time.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Founded as a refugee camp, now a popular tourist spot.

The tomb of one of the greatest travelers in history.