Potsdam, Brandenburg, Germany - ornamental lake below the Mercure hotel

Potsdam, Brandenburg, Germany - tropical cafe on the quayside below the Mercure hotel

Potsdam, Brandenburg, Germany - sign at wooden house in the Russian Colony

Potsdam, Brandenburg, Germany - Russian doll advertising a Russian restaurant in the Russian Colony

Potsdam, Brandenburg, Germany - doorway of wooden house in the Russian Colony

Potsdam, Brandenburg, Germany - carving on roof of wooden house in the Russian Colony

Potsdam, Brandenburg, Germany - the Nauener Tor from inside the town

Potsdam, Brandenburg, Germany - hideous gargoyle on the Nauener Tor

Potsdam, Brandenburg, Germany - art gallery in the Hollandisches Viertel

Potsdam, Brandenburg, Germany - sparrow on a table in the Hollandisches Viertel

Potsdam, Brandenburg, Germany - metal ship signs at the Flying Dutchman in the Hollandisches Viertel

Potsdam, Brandenburg, Germany - Marx named in strange sculpture outside the library

Potsdam, Brandenburg, Germany - Mercure hotel tower from Schlossstrasse

Potsdam, Brandenburg, Germany - St Nikolaikirche from Breite Strasse

Potsdam, Brandenburg, Germany - Nauener Tor at dusk

Potsdam, Brandenburg, Germany - Nauener Tor at dusk

Potsdam, Brandenburg, Germany - ice age creature outside entrance to Bahnhofspassagen shopping centre

Potsdam, Brandenburg, Germany - communist-era space mural on a government office in Breite Strasse

Potsdam, Brandenburg, Germany - glockenspiel in Dortustrasse

Potsdam, Brandenburg, Germany - canal in Yorckstrasse

Potsdam, Brandenburg, Germany - derelict building in Yorckstrasse

Potsdam, Brandenburg, Germany - 'Not drinking water' sign above the dried-up canal bed in Yorckstrasse

Potsdam, Brandenburg, Germany - bearded gentleman and bird's nest on a building in Dortustrasse

Potsdam, Brandenburg, Germany - cherubs above a door in Dortustrasse