An underground city of salt.

Krakow's own version of the Hollywood Walk of Fame.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Real bones which are said to have belonged to a Polish dragon.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Once home to some 250,000 volumes and priceless art artifacts, this Polish estate was a target of bombing during World War II.

Special benches that play Chopin's music are scattered throughout his native city.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A statue honors the children who fought Nazis in Poland.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

A medieval village, with red wooden cottages around a stone church, stands as a well-preserved example of a settlement type that was once common in northern Sweden.

The oldest skyscraper of Europe now stands dwarfed by the surrounding structures.

Where members of the Crossbow Corps of San Marino demonstrate their skills.

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

Designed by Gustave Eiffel before his famed tower.

Explore a remarkable 35-hectare sculpture garden located an hour outside of Lisbon.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

An Antoni Gaudí masterpiece in Astorga.

This unique museum is home to over 5,000 puppets of all types.

This memorial to a murdered empress took 20 years to design, then spent 30 years hidden away in storage.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

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

According to legend, this ancient column contains healing properties.