The Fredericia Museum (Fredericia Bymuseum) is housed in a handsome eighteenth-century complex of former tobacco merchants' buildings just inside the ramparts. The permanent collection covers the town's founding as a fortress, the religious refugees (Huguenots, Jews and Catholics) who were invited to settle and given freedoms unusual for the period, and the 1849 battle in detail.
The model of the seventeenth-century fortress in its prime is worth lingering over, and the silver collection from the local Huguenot families is one of the best in Denmark. A small but coherent museum that gives the town proper context — go here before walking the ramparts.