A 200-year-old tavern challenges guests to finish a glass of wine while hanging from a ceiling beam.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

Underneath the well-known Lindenhof hides a secret cellar documenting Zurich's early history.

A 700-year-old drinking fountain turned charity for the less fortunate of Zurich.

Constructed along the shores of Lake Zurich, this pavilion is a walk-through work of art.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

Switzerland's oldest public observatory is an important part of the Zurich cityscape.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A jumble of concrete on the corner of one of London’s terraced buildings is actually a work of art.

Hear the quietest sound from across the dome.

The largest of London's subterranean rivers and once a mad, bad center of London life.

Victorian-era Londoners really wanted to believe this 17th-century cistern was actually an ancient artifact.

London's smallest police station is barely the size of a phone booth.

An unusual round church in London with a Templar past.

This ancient Egyptian obelisk still bears the wounds of World War I.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

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

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

The final resting place of a German diplomat's beloved companion.

The bronze uniforms commemorate the vital role of women during World War II.