Established by Charlemagne, Hamburg owes much of its architecture to the rebuilding done in the late 19th and early 20th centuries after a massive fire. World War II also inflicted severe damage, but the city's medieval character is still evident thanks to post-war restorations. Water is a wonderful feature here – as you’ll notice when you arrive along the River Elbe, investigate quirky historic districts by canal and glide past highly desirable addresses lining the Alster lakes.