The smallest museum in Basel, Switzerland, is a two-foot-by-two-foot window in the door of a 600-year-old house.

An 11th-century fortress home to one of the most influential royal houses in medieval Europe.

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

This simple apartment may have inspired some of the most important theories in the history of science.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.