Nils Ericsons sluss

Nils Ericsons lock is an engineering structure that connects Lake Mälaren with the Baltic Sea, allowing vessels to move between these two water bodies. The system features solid stone construction and water-level adjustment mechanisms that handle the height difference between the two sides.

The lock was completed in 1850 and replaced an earlier water passage to handle larger ships and rising maritime traffic through Stockholm. Its construction reflected Swedish efforts to modernize the city's harbor infrastructure during a period of growing international trade.

This lock represents Swedish pride in 19th-century engineering achievement and remains an active part of maritime life in the city. Watching ships navigate through it today shows how historical infrastructure still shapes daily transportation on the waterway.

Visitors can watch the lock in action from nearby walkways and observe ships moving through different water levels. The best viewing spots are from the northern or southern shore where you have a clear line of sight to the mechanism and can see the gates operating.

A hidden boundary line between two historical Swedish regions runs directly through the center of the structure. This invisible border marks a geographical split that few visitors realize while watching ships pass through.

Location: Stockholm Municipality

GPS coordinates: 59.32175,18.07311

Latest update: December 14, 2025 11:26