Finland has eight sites on UNESCO's World Heritage List: a sea fortress, a wooden town, a wooden church, an industrial landscape, a Bronze Age burial site, a geodetic survey network, a natural heritage site, and an architectural ensemble. Muinoin is a free map service where you'll find all of them on one map with further details: discover the ones near you and log your visits.
A sea fortress built on six islands off Helsinki, a short ferry ride from the Market Square. Sweden began construction in 1748 as a counterweight to Russia, and today about 800 people live there permanently.
Did you know: Suomenlinna is the only inhabited fortress island on the world's UNESCO list. Its postal address is simply "Suomenlinna, Helsinki".
One of the best-preserved wooden towns in the Nordic countries. Around 600 wooden buildings form a dense whole that has been continuously inhabited and traded in since the 1400s.
Did you know: Rauma is the only inhabited wooden town on UNESCO's World Heritage List, and the local Rauma dialect is still spoken as everyday language in the town.
One of the world's best-preserved 19th-century small-scale industrial communities. The groundwood mill and board factory operated almost unchanged until production ceased in 1964.
Did you know: the mill was never modernized, and it was museum-ready exactly as it stood on the day it closed.
Part of a chain of 265 triangulation points stretching from Norway to Ukraine, used to determine the precise shape and size of the Earth for the first time. Oravivuori is the best known of Finland's six points.
Did you know: the 19th-century survey measurements are still used to calibrate today's GPS systems.
The world's most significant example of post-glacial land uplift. The land is still rising by about 8 millimeters a year, and the area covers around 5,600 islands and skerries.
Did you know: Kvarken is the only UNESCO site in the world that is literally growing. Former shallows keep rising above the surface.
13 buildings designed by Alvar Aalto — and his wives Aino and Elissa Aalto — across seven towns and cities, including Paimio Sanatorium, Finlandia Hall, and Villa Mairea. The nomination was inscribed on UNESCO's World Heritage List in July 2026.
Did you know: the nomination stretches from Kotka to Imatra and Noormarkku — 13 separate buildings grouped into a single World Heritage Site.
How many UNESCO World Heritage Sites does Finland have?
Finland has eight sites on UNESCO's World Heritage List: Suomenlinna, Old Rauma, Petäjävesi Old Church, Verla Groundwood and Board Mill, Sammallahdenmäki, the Struve Geodetic Arc, the Kvarken Archipelago, and Aalto Works — a group of 13 buildings designed by Alvar Aalto, inscribed in July 2026.
Which of Finland's UNESCO sites are inhabited?
Suomenlinna, Old Rauma, and Sunila — the factory housing area that is part of Aalto Works — are all still inhabited. About 800 people live permanently in Suomenlinna, Old Rauma is still lived in and traded in much as it has been since the 1400s, and people still live in the Aalto-designed housing at Sunila in Kotka.
Is it free to visit Finland's UNESCO sites?
Suomenlinna, Old Rauma, Sammallahdenmäki, the Struve Geodetic Arc, and the Kvarken Archipelago can all be freely viewed from the outside. Some sites — such as Verla Groundwood and Board Mill and most Aalto Works buildings — also offer paid guided tours indoors, and a few of the Aalto Works buildings are not currently open to the public.
Which Finnish UNESCO site is closest to Helsinki?
Several Aalto Works buildings are right in central Helsinki — Finlandia Hall on Töölö Bay and the Kela Main Office in Taka-Töölö are both within walking distance of the city centre. Suomenlinna, on its island, is a short ferry ride from the Market Square.
What is Muinoin?
Muinoin is a free map service that gathers Finland's historical sites into curated collections. Alongside Finland's UNESCO sites, Muinoin also covers medieval Finland's stone churches and castles. It works directly in your browser, with no app store install required. You can optionally log your visits.