Vanhankaupunginselkä

Geographically the area lies east of Helsinki peninsula and is surrounded by the districts of Hermanni, Arabianranta, Viikki, Herttoniemi and Kulosaari.

Although the area appears to be either land or water on various maps or satellite pictures, it is largely marsh-like, impassable either on foot or on boat.

During times of higher water, the duckboards can be submerged in whole or in part, while in winter, the boards can be warped or destroyed by ice.

In addition, fishing is not permitted at the area, nor is walking unleashed dogs or horse riding.

Furthermore, as Vanhankaupunginselkä is frequently visited by persons interested in nature, informal social control is strict.