The Unesco World Heritage–listed Bronze Age burial complex Sammallahdenmäki dates back more than 3500 years. Thirty-six stone burial cairns of different shapes and sizes are spread over a kilometre of forest. The two biggest are kirkonlattia (church floor), a monumental quadrangle measuring 16m by 19m, and the huilun pitkä raunio (long cairn of Huilu).
Sammallahdenmäki is close to Lappi village, 20km east of Rauma, signposted from Hwy 12. Buses run on school days only (€6.10, 30 minutes, eight daily).
