The world's oldest bookshop still in operation.

Get in line for Lisbon’s most famous sandwich.

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

This famous archeological mystery may be an ancient example of movable type.

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

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

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

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

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

The hallucinogenic center of the ancient world.

This legendary city has been a tourist attraction for centuries.

The last bastion of Roman presence north of the Alps looms over a German town.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Go inside to really appreciate this 500-year-old technological masterpiece.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

Louis Sullivan’s dark, swirling cast-iron designs envelop a popular department store in this Chicago landmark.

A historic 1929 art-house cinema that features independent, classic, cult, and foreign films in an atmospheric setting.

The last remaining vestige of a popular 1999 public art display.

These murals have been brightening a Chicago beach for more than 30 years.