The Harju ridge and its landmark, the Vesilinna observation tower, greet visitors from nearly all directions. Harju, a popular recreational area, is a pine forest haven in the middle of the city. A jogging track runs around the area, which also has many paths and trails for pedestrians. The main route from the city centre to Harju runs through the majestic Nero stairs at the top end of Gummeruksenkatu. Named after municipal engineer Oskar Nero, the stairs were constructed as a job creation programme in 1925. Today, they may be even better known as the “stairs of knowledge” among residents, because of the university. Or if you ask for directions to the Harju stairs, locals will know what you are talking about.
The Vesilinna tower was built in 1953. It serves as a water and observation tower as well as the location of Café & Restaurant Vesilinna and the Natural History Museum of Central Finland. Its observation deck offers magnificent views in all directions. In addition, the Vesilinna observation tower (also known as the Harju tower) is an essential part of the soundscape in Jyväskylä.
https://visitjyvaskyla.fi/en/see-experience/the-centre-of-jyvaskyla/harju-ridge-vesilinna-observation-tower