Introduction to Eggenberg Castle: There is a splendid and exquisite castle in the suburbs of Graz - Eggenberg Castle. It was built by Margrave Johann Ulrich von Eggenberg at the request of an Italian architect in 1623. , is a splendid building in Renaissance style. The four towers of the palace symbolize the four directions of southeast, northwest and northwest, the 365 windows symbolize the days of the year, and the 24 halls symbolize the 24 hours a day. In 2010, it was listed as a World Cultural Heritage.