Initially built as a fortress against external forces, the Rosenkrantz Tower is considered to be one if the more important monuments in the entire region of Norway because this is something which pretty accurately depicts the rich culture and heritage of this country. Its initial structure was built in the year 1270 but subsequent rulers have always brought additions to that thus; making it a force to be reckoned with. The main tower was named after the governor of Bergen Castle, Erik Rosenkrantz.