Posthof is Linz's most useful venue for travellers who want the city after museum hours. The old postal complex near the harbour has been turned into a multi-stage arts centre with a programme that runs through concerts, dance, theatre, comedy, and cabaret.
Check the calendar before you go, because the building is only as interesting as the night you choose. When the programming lines up, it is a good way to see Linz as a working cultural city rather than just as a stop between the old town and the Danube.