Flensburg rewards those who explore beyond the pedestrian zone. The Nordertor is the most photographed landmark and a good starting point for walking north along the old town. The harbour area, with the Schifffahrtsmuseum and its rum collection, is the best of the city's museums. Flensburger Brauerei is known far beyond Germany for its distinctive flip-top bottles.
For something stranger, the Mumiengrotte in a public park contains an early 19th-century stone sarcophagus — one of the city's best-kept secrets. The Isted Lion tells a story of Danish-German border politics that still resonates in this bilingual city. History enthusiasts should not miss Mürwik Naval School, briefly the seat of the last Nazi government in May 1945.