Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

An ancient burial ground believed to have been used for ritual sacrifice.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

Where commuters walk through remnants of an ancient Greek necropolis.

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

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Europe's oldest still-operational tea farm also boasts a spectacular view.

This oddly shaped church resembles a rocket.

One man's remarkable private collection of art from around the world.

A chunk of the "true cross" is held in this small Portuguese church where modern day exorcisms are said to be common place.

Elaborate tile work in this railway station tells the story of Portugal.

A hidden three-foot-wide house separates these two regal churches.

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A unique seaside cave where Aleister Crowley faked his own death.

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

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Hundreds of Buddhas in a re-discovered Indonesian temple.

A manifestation of modernist architectural ideas, this massive, multi-purpose building was one of the first of its kind in Southeast Asia.