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A "water park" meaning a floated obstacle course in the Oulu river delta. Right next to the Oulu castle ruins and cafe, so you can get a coffee or a cold beer after!
© OpenStreetMap contributors
Oulun linna
The castle was damaged by attack in the 18th century and finally blown to pieces in 1793 when lightning struck the gunpowder magazine. What you see now is the maritime observatory built on the ruins; it's set in a pleasant park, and you can climb the tower for views. There's a café (Tähtitornin kahvila) within. The cellar (same hours) displays info on the castle - mostly in Finnish, but there's more in the Northern Ostrobothnia Museum.
Oulun Kaupunginteatteri
Plays in Finnish.
Merimiehenkotimuseo
The Sailor’s Home Museum is on the idyllic island of Pikisaari near downtown Oulu. The museum is in the oldest surviving wooden building in Oulu, also known as Matila House, and is the former home of sailor Isak Matilainen.
Raatin uimahalli
Public pool and gym. Renovated in 2010. The closest public pool to downtown. Pools include children's pool, teaching pool, two 25 meter pools and a cold-water pool.
SUP
The Oulu River delta offers an exceptionally good frame for stand-up paddling and kayaking, so why not try it out? The boards/kayaks are easily rented in either Kiikeli or Nallikari, although the former one has better selection. Use the internet reserving system (http://www.lappis.fi/index.php/sup-varaus-online/) or call the renting company to assure that there are boards available for you.
Pohjois-Pohjanmaan Museo
Closed for renovation until 2026A great museum on the history of Northern Ostrobothnia, especially the history of Oulu. Exhibitions on four floors.