Inside this metro station is a section of the city's former medieval fortification.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

The house of physicists Paul Ehrenfest was also a temporary dwelling and study for his good friend Albert Einstein.

This replica of Columbus's famous ship houses the history of La Palma's maritime importance during the Age of Exploration.

Albert Einstein would often sit in this chair during visits to the observatory to discuss science with Willem de Sitter.

A former 16th-century monastery houses a museum dedicated to the island and its culture.

The suspected burial mound of legendary Viking Björn Ironside.

The largest refracting telescope in Europe is housed on the grounds of a former French castle.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

Portraits of musicians line Oude Binnenweg, the jazziest street in the city.

An art installation memorializing a tram stop, which became a tram stop.

Europe's official "zero-level," the equator of elevation.

An impressive array of unique homemade planetariums.

This functional solar system model was inspired by the famous Eisinga Planetarium.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

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

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

A Viking man's tribute to his brother stands in Gävle's oldest church.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

Indigenous cultures believed all life would end if this enormous rock toppled.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

Stop by, and you'll receive a map to two well-preserved ancient petroglyph sites.

This tribute to the 16th-century composer is now an unusual shrine to Michael Jackson.

Tools, pottery, and mummies showcase the history of La Palma's native people.