PHANOMENTA is Flensburg's hands-on science centre, set by the Nordertor at the northern end of the old town. Exhibits are built around direct experiments rather than display cases, making it especially useful for families.
The museum works well as a rainy-day stop or as a break from walking the old town. Its location beside Flensburg's historic city gate also makes it easy to combine with a visit to the Nordertor itself.