Virnamäki is an Iron Age grove-like ancient remnant area in Turku, Finland. Virnamäki is known for its combustion field cemetery and Iron Age residence. There are also several cupstones in the area. Virnamäki forms a discovery area at least 250 m long, which also represents the cultural landscape of the Aura River.
The most notable burial ground in Virnamäki is the ancient hill fort of Kakolanmäki. This Iron Age fortification dates back to around 1200-1300 AD and was built on a hill overlooking the Aura River. The fortification was used as a defensive structure, likely by the local tribes who inhabited the area at the time.
In addition to the hill fort, Virnamäki also contains several ancient burial mounds and stone circles that date back to the Iron Age. These structures are believed to have been constructed by the local tribes as a way to bury their dead and honor their ancestors.
Virnamäki is also home to the Turku Prison Museum, which is housed in the former Turku County Prison. The prison was in operation from the mid-19th century until the late 20th century and is now a popular tourist attraction, offering visitors a glimpse into the history of the Finnish penal system.