Each country has many interesting museums that are important for memorizing its history and culture. In general they do not differ a lot from each other in one region. If you have been to one open - air museum in Baltic countries - it is enough because other will be very similar. I am also quite skeptical about local museums that reflect history of the region. They are important for us but not foreigners. Besides the green forests, silent beaches and 1000 ways how the spend the great time in Latvia I would like to point out several museums and attractions that would be interesting for foreign audience.