Atlas Obscura is one of the largest, most well-known and most impeccably awesome archives of amazing places, foods and experiences in the world.
Here is their list of places to see in Finland! From a glass igloo you can rent out and watch the Northern Lights, to a precariously placed rock supposedly put there by giants, to an alien-looking church providing some silence in a shopping mall, to a lake-bound marker sitting at the point where three countries intersect, this Scandinavian country is full of wonder! How many of these cool sites have you been to?
Note: Some of these you cannot visit or see anymore, which have been marked with (Permanently Closed). So therefore, if you haven't already seen them, I don't know if you'll ever be able to completely finish this list.
Note 2: This is as of August 17, 2024. Sorry future people, there will definitely be more that can't be added.