The castle has been built in medieval time, and the town has developed around it on Vanaja lake. There are many museums: the Castle Museum, the Prison Museum, the Artillery Museum, etc.
Colonel Hugo Robert Standertskjöld (1844-1931) grounded the Aulanko park and built the granite tower (1907). There is also a famous hotel and a bear-family statue by Robert Stigell.
Nicely preserved medieval castle, restored in 1970s after 300 years use as a warehouse and a prison. Contains a museum with ethnographic and archaeological exhibits.
Unfortunately I was not able to go inside, but I guess it is a must for every classical-music-lover. For example, the piano can be seen on which Sibelius learned how to play as a child.