Jaunpils development is linked to the Livonian Order's castle, which until now has hardly changed its building volume and appearance. From 1561 until 1919 it belonged to the barons Reki family. In 1905 the castle was burned down, but later it was reconstructed under the supervision of architect V. Bockslaff. Substantial castle restoration work began during the sixties of 20th century. Now in the castle is a museum, but gourmets can taste medieval dishes at the castle tavern.