This commercial capital and common layover destination has a surprising amount to offer tourists. On a sunny, not-too-cold day, take a walk along the river. You’ll see the range of architecture in the city, from the few medieval buildings that survived World War II to some zany modern ones well worth photographing. My favorite museum of the ones I saw during my brief time in Frankfurt was the Museum fur Kommunikation. It’s interactive and inexpensive. From the phone-headed sheep in the  more...