Hear the quietest sound from across the dome.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

This South London cemetery holds the remains of more than 15,000 people.

Budapest's Communist-era statues, banished to the suburbs.

A museum in the childhood house of a medical pioneer.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A delightful museum entirely dedicated to the tiny homes of dolls.

This imposing 20th-century castle was abandoned before it was ever completed.

Naturally formed rock city in Poland.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

Baroque celebration of the end of the Great Plague of Vienna.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.