Royal Palace

Stora Sundby Slott (castle) is a castle in Eskilstuna (Sweden). The architectural features of the castle resemble those of a calendar, four large towers symbolizing the seasons, twelve small towers symbolizing the months of the year, 52 rooms symbolizing the weeks of the year and a window for each day of the year (365). The architect was Peter Frederick.

The scenes that took place in the Royal Palace were shot in this castle.