Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

Ice cream stand, snack bar, and time capsule of milk conveyance.

An inclusive, climate-resilient playground honors the life of a young Boston Marathon bombing victim.

An enormous, inside-out glass globe built in 1935.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

This buzzy, award-winning building hovers 85 feet above the ground on a dozen colorful stilts.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.

Dedicated to a synagogue that was destroyed after having survived World War II.

A sculpture of the beloved author surrounded by characters from his fairy tales.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

A perfectly preserved hill village where the buildings are painted like white lace.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

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

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

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

The unexpectedly beloved remnants of a controversial thermal power plant.

Ornate lobby of a police station is decorated with colorful murals by Augusto Giacometti.

Lines on the pillar of Heidelberg's Karl-Theodor Bridge record the dramatic heights of past floods.