Maamme ("Our Land"), the de facto national anthem of Finland, is in the tradition of non-nationalistic Scandinavian anthems which behold the beauty of the North. Indeed, the original Swedish text ("Vårt land") does not mention Finland. The music (by Frederik Pacius) and words (by Johan Runeberg) were written in the 1840s and translated into Finnish in 1867 (where a mention of "Suomi" was added). As Finnish and Swedish are both official languages of Finland, both versions are official. The same melody was later used to create Estonia's national anthem.
The Wikipedia article is good and includes lyrics, though note the English translation is based on the Swedish and not the Finnish lyrics.
Below is a video of Finnish singer Tarja Turunen singing the anthem at Independence Day festivities. She sings Finnish verse 1, Swedish verse 1, Finnish verse 2.
Here is a choral a cappella version including some images of Finland: