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

Underground attraction offering tours of the foundational ruins of a church nave that collapsed in 1674.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

A vast Communist-era exhibition space in the Bulgarian capital.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

"Holy Wisdom" overlooks the city that became its namesake.

Sofia's legislative center is continuously reinventing itself.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

The hot chocolate here all stems from small, sustainable microproducers in Chiapas and Tabasco.

The only castle in North America to ever house European sovereigns.

A museum in the former home of Marxist revolutionary Leon Trotsky.

One of Mexico's least-visited archaeological sites is tucked away inside a theme park.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

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

An Orwellian sculpture with eyeball cameras watches passersby.

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

Long before ultrasounds and modern testing, medical specimens like these conjoined twins helped physicians learn about congenital anomalies.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

Hans Christian Andersen for the postmodern world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.