It reminds me of my visit to the Belgo building in Montreal (all posts on the Belgo galleries HERE); an old building with stairs, corridors and doors leading to different galleries and exhibitions. The Löwenbräu is smaller, so there is less to discover.
Unfortunately the Migros Museum, the Kunsthalle and a few of the galleries were closed because new exhibitions were set up, or old ones were dismantled.
But without many exhibitions taking place I take the time to explore empty rooms and peek through the open doors from closed galleries. In the Belgo-Montreal I discovered I loved to take pictures of open doors revealing the hidden. And no ... in general I'm not a nosy person.