Who was the trans woman Käte Rogalli?

Käte Rogalli is not the first transgender person to be commemorated with a stumble stone, a Stolperstein. But she is the first trans person to have her real name engraved on the stone. Here's her story.

The Flaktower in Humboldthain

Today, the flak tower in Volkspark Humboldthain is for many people an observation deck, but during the Second World War the building was an anti-aircraft bunker constructed at the idea of Hitler himself.

I've been asked many times about the pink pipes scattered around the sidewalks and streets of Berlin. Here's the explanation, and it might be a little more boring than you imagine.