The footprint of a frustrated devil in Munich's Cathedral.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A fearsome dragon clings to a corner of Munich's city hall.

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

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This modest marker near Notre Dame identifies the very center of Paris.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A floating cat sanctuary on an Amsterdam canal.

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

Widely advertised as Amsterdam’s narrowest street, this passage was once a highlight of the Red Light District before its windows closed.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Europe's first floating restaurant is home to a hilarious legend.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Europe's official "zero-level," the equator of elevation.

It holds a fabulously designed tribute to astronomer Edmond Halley.

At almost 1,000 years old, this is the oldest known door in all of Britain.

The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

Giant, friendly pelicans in Central London, the most unlikely of places.

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

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

The London statue that imitates passersby.

Murals of the wild parties once held on the frozen River Thames.