I think it's a public toilet...

Entrance to Zoo Berlin (Zoologisher Garten Berlin Ag).

I had never seen a red squirrel before...

Berliner Mauer 1961-1989 (a reminder of the Berlin Wall)

A little bit of the Wall remains as an outdoor museum, Topographie des Terrors (Topography of Terror.)

The Berlin Wall?

Berliner Mauerweg (A sign along the Berlin Wall Trail)

Contrasting the Brandenburg Gate at two different times in history.