Cycling in Hamburg
Hamburg is Germany's Northern City, flat, riverside, and perfectly suited for a bicycle.
Elberadweg - 20km car free ride along the river Elbe. Alsterwanderwed - another cycle path along another river; more urban at the beginning and it ends up as a small river in the forest.
Attractions/sights accessible by bicycle from the city centre:
Elbphilharmonie (10 mins), Elbe beach (10 minutes), Portuguese Quarter (5 mins), Alster Lakes (10 mins), Schanzenviertel (5 mins).
Mayor's stance on cycling:
He wants to push it!
Cycling at night:
Most streets in my city are well lit