Cologne

Lichtfaktor

Video of the Day: Whole Zoo of Glowing Animals Gets Loose in Cologne

A team of "light painters" make jellyfish, birds and a whale appear in this dazzling video from Germany.

Flickr/rkirchne

Subway Platforms From Around the World

As iconic as anything above ground, these subway platforms leave riders with an added sense of the city they serve.

Postcard From Cologne

Locks for love.