If possible come and visit basel in summer or spring, its rather a small town so ur best of to see it on foot or by pushbike! Cycle along the river and see parts of the oldtown during the day, for eg start near St.Alban and ride to "Birsköpfli", lie in the sun and have a swim in the rhine, then ride across the bridge and back along the river to the "Tinguely Museum"! Soon you'll be reaching the "mittlere brücke",go a bit further and have a cold beer at one of the "buvette", a relaxing bar where u can either sit under the shade or cool ur feet at the riverboard! When the sun sets you should hear a concert on the "Floss" and make ur way further up to the NTAreal and party till dawn...