Turkansaari is a nice open air museum with pretty old wooden buildings showing glimpses of local history. The museum is located on three islands in the Oulujoki River 12 km upstream from downtown Oulu. The museum is the second-oldest open air museum in Finland. It was established in 1925 when the island's wooden church dating back to 1694 was restored to its original location. The museum islands host a number of old buildings relocated to the museum to save them from demolition. When the weather permits, coming to the outdoor museum by bicycle is recommended. The total distance from the city centre is 16 km.
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The forests surrounding river Sanginjoki are a popular trekking site near Oulu. Old-growth forest and a fishy river with nice rapids. Fishing requires permission. Having exceptional nature values there are plans to form a large nature reserve here.
Built in 1908, the Oulujoki church is the only remaining wooden jugend church in Northern Finland. It is pretty, and a common wedding church. You can visit the church via Sunday masses at 10:00.
Oulun Automuseo
A car museum with 40 cars and 20 motorcycles and some traffic related paraphernalia on display. A couple of really interesting vehicles like the largest car ever built in the Nordic countries (a truck for a dam company), the remains of a Ford "killed in action" during World War II and a "motorcycle" where the rider sits inside a large wheel. The car museum also has a restaurant open for lunch.
Seikkailupuisto Huikia
A considerably expensive "adventure park" near the main swimming pool of Oulu. The park's courses are mainly many metres up on the trees where you move with, e.g., cable ropes. A fun and exciting experience for everyone.
Indoor activity park for all the family. The Freestyle Hall boasts a skate and scooting park, the extremely popular AirTrack tumble track, and a range of ramps and trampolines. The Game Arena features a hockey radar, disc golf, and basketball for those with a competitive streak. The Adventure Area has climbing walls, exhilarating slides, and a pedal car track. SuperPark Oulu also has a play area called Adventure City for small children.
In Sweden (to which Finland belonged from the 1300s to 1809), a "Kronomagasin" was a state-administered warehouse in which grain and other foodstuffs collected as tax were stored. Unfortunately, one can't go inside the warehouse any more since today it functions as an office for an architecture company. It is worth checking out from the outside though, the old wooden building sticks out amusingly from the 1980s apartment buildings and offers a reminder of the historical aspects of the city.