Inside the ramparts, Fredericia's old town is laid out on a perfect grid, drawn up in 1650 by King Frederick III's military engineers. Streets run north-south and east-west and meet at right angles, all named with regimented logic — Prince's Street, Princess Street, Royal Street.
The buildings are mostly two-storey eighteenth- and nineteenth-century townhouses in pastel plaster, with a handful of older timber-framed survivors. It is a small grid, easily walked in an hour, and gives a clear picture of how a seventeenth-century planner imagined a model town. Gothersgade and Danmarksgade are the main shopping streets.