Traveling
Parking is a problem as in many other big cities, but you´ll get a parking lot if you are ready to pay for it.
The whole area around the harbour is just amazing. There is the Speicherstadt with its red brick buildings, the completely new build HafenCity with its modern architecture and the Landungsbrücken with its view towards the huge harbour. A roundtrip with a boat in the harbour is obligatory. There are many more buildings which are worth a visit like the church St.Michaelis called Michel which offers a fantastic view when you go up to its observation platform.
Parking is a problem as in many other big cities, but you´ll get a parking lot if you are ready to pay for it.