Group that is open for everyone, but I would like to get as many Norwegians in here as possible. But everyone is welcome!
"Tønsberg Fortress (Tunsberg festning) was a medieval fortress, located in Tønsberg, Norway which was defended by the fortress for over 300 years. Dating in 871, Tønsberg is commonly believed to have been the oldest Norwegian town and one of the oldest recorded fortified locations in Norway.
[...] The modern-day tower (Slottsfjellet i Tønsberg) was raised in 1888 as a memorial of the historic fortress."
-- Wikipedia [01.10.12-EN]