Lappee church is a wooden so called double cruciform church situated in the centre of the city. The church was built in 1794 by Juhana Salonen, a church builder from Savitaipale. During the years the building has gone through many renovation and modification works.
Aleksandra Frosterus-Såltin has painted the altarpiece, which represents the Ascension of the Christ, in 1887. The other paintings are made by unknown artists. The existing organs are from the year 1967. The church serves travellers as a road church.
South of the church stretches the graveyard, with an evocative war memorial, which features cubist and modernist sculptures commemorating Finns who died in the Winter and Continuation Wars. The most striking depicts a mother mourning her soldier son lost in battle, by Kauko Räsänen.
The small Grisslehamn village is today a well-preserved sample of 19th century architecture and popular attraction for daily trips. The name Grisslehamn was first mentioned in a document from 1376 about the mail route between Sweden and Finland. This Grisslehamn was located some 20 km south of today's location. In the mid-18th century, most of the old village was destroyed in a fire, and it was decided to move Grisslehamn to its current location to make the mail route shorter. Conveying mail by row boat from Sweden to Åland, from whence it was transported to the Finnish mainland, was, together with fishing, one of the most important sources of income for the inhabitants of Grisslehamn and other parts of Roslagen for a long time, until steam ships took over the mail routes in the early 20th century.
During the Finnish War in 1809 a small unit of Russian cossacks attacked to Grisslehamn over the frozen Gulf of Bothnia. In the battle 80 Swedish soldiers surrended and several were killed.
Today there are several buildings dating from the 19th century, like the toll station and old barracks. The post office was built in 1755 and the chapel in 1909.