This stunning concert hall has become a symbol of Iceland's national recovery.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

France's most famous cemetery, with some of its most curious tombs.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

A nomadic museum known for its art exhibitions about religion and faith.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

A beautifully eclectic mix of architectural styles.

Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

A true Valhalla for cactus and succulent lovers.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

A miniature city, once ruled by the Queen of the Netherlands.