The castle served as the official administrative center for the Swedish Empire in Finland for several centuries.
Duke John of Finland held his wedding here in 1562, which transformed the castle into a Renaissance-style royal court.
During the 17th century, the castle functioned as a prison rather than a royal residence.
The interior contains an intact medieval chapel that is still occasionally used for private ceremonies.
Large portions of the castle were severely damaged by Soviet air raids in 1941, leading to a long-term restoration process.
The castle museum stores an extensive collection of archaeological finds recovered from the Turku city center.
The thick outer walls were designed to withstand heavy siege artillery common in the late Middle Ages.
Turku Castle is the oldest building in Finland still in use, with foundations dating back to the 1280s. The site evolved from a military camp into a grand royal residence during the 16th century under Duke John and Catherine Jagiellon. It serves as a comprehensive history museum documenting the medieval, Renaissance, and Swedish-era past of Southwest Finland. The structure is divided into the Main Castle, which houses the medieval halls, and the Bailey, which displays Renaissance-era decor and living quarters. Its thick stone walls survived major conflicts, including the Great Northern War and WWII bombing raids. The museum features permanent collections of historical artifacts, coins, and medieval religious art. Visitors navigate through narrow stone staircases, interconnected chambers, and vaulted banquet halls. It is the only surviving medieval castle in Finland that remains largely intact after centuries of modifications.
The view of the castle exterior from the southern harbor side of the Aura River.
Wear comfortable, flat shoes to navigate the uneven stone floors and steep spiral staircases.
Visit the dungeon level to experience the cold, original medieval masonry.
Check the official website for specialized guided tours that access restricted areas not open to the general public.
Do not underestimate the physical exertion required for the stairs; there are no elevators in the oldest medieval sections.
Closed on Mondays during the off-season; generally open daily during the summer months.
Maintain a quiet tone in the museum areas and do not touch the historical artifacts.
