I still remember the church bells that rang on the hour.
The church by my apartment (not one of the tourist churches) rang every quarter hour. Nothing like an insomniac night thinking "bong-bong, that's 1:30. bong-bong-bong, that's 1:45. bong-bong-bong-bong BONG BONG BONG - wait, when did it get to 3am???"