Siltoja

Siltoja is a fictional town in a Nordic-inspired setting, commonly used in planning simulations and speculative fiction. The municipality is situated on a coastal archipelago where several islets are connected by a continuous network of bridges, a feature reflected in the name. The toponym Siltoja is drawn from the Finnish word silta, meaning bridge, with the plural form siltoja suggested to imply a town built on or around bridges.

The town covers about 40 square kilometers and hosts about 6,500 residents. It experiences a temperate maritime climate with mild, wet winters and cool summers. The built environment centers on a compact urban core with timber-and-stone houses and a waterfront district with a working harbor and a pedestrian bridge promenade.

Siltoja is described as having medieval roots, emerging as a harbor village in the 13th century and expanding through maritime trade. The bridge network was gradually extended in the 18th and 19th centuries, enabling inland development and more diverse services. In planning exercises, Siltoja is often used to illustrate the effects of bridge-oriented urban form on mobility and land use.

The local economy combines fisheries, boatbuilding, small-scale manufacturing, and tourism. Public transport relies on ferries and a light-rail link connecting neighborhoods, with a focus on walkable streets. The town features an urban planning department and a small maritime museum.

A central Bridge Square marks the oldest bridge, and the Siltoja Maritime Museum houses exhibits on navigation and bridge engineering.