Sip cherry liqueur at a bar dating back to 1840.

In the Monastery of São Vicente resides a gallery devoted to a breathtaking collection of seashells.

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

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

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

The world's oldest bookshop still in operation.

One of the smallest bookstores on the planet.

The scorched Lisbon church that survived two earthquakes and a massive fire.

The prototype for all Nazi concentration camps.

This splendid tomb may look fantastic, but there's nothing in it...

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

Tubing through a cave lit with glowworms is a magical underground experience.

The shallow, salty inlet was a safe haven for 19th-century pirates.

A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

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

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

The ruined doorway is a portal to the building's turbulent and torturous past.

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

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

An ancient Greek monument and a Byzantine church coexist inside this cave.

Legend says this sacred tree was a gift from goddess Athena.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.