What could be more festive than spending a night locked in an art gallery with a dozen reindeer and a fridge full of psychedelic drugs?

Taking installation art to the next level. "Soma, Carsten Höller's current installation in a former railway station in Berlin, purports to be offering exactly that. A pen running the length of the Hamburger Bahnhof, now the city's contemparary art museum, contains 12 reindeer, 24 canaries, eight mice and two flies. Giant toadstool sculptures are planted on a mushroom clock that the reindeer can turn with their antlers, and at the centre is a mushroom-shaped "floating hotel" – a bed on a platform complete with minibar"