Brunkebergstunneln

Coordinates: 59°20′13″N 18°03′52″E / 59.33694°N 18.06444°E / 59.33694; 18.06444

The Brunkeberg Tunnel in Norrmalm, , is a 231-metre-long passageway for pedestrians through the esker Brunkebergsåsen. The tunnel was inaugurated in 1886 by King Oscar II.

...
Wikipedia