In the days before house numbers, these colorful signs held clues about various buildings' purposes.

A unique collection of gilded age mechanical pianos.

This subterranean studio is filled with fascinating kinetic art.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Art and a pun, all in one.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.