Stora Sundby Castle

Stora Sundby Castle (Swedish: Stora Sundby slott) is a castle in Eskilstuna Municipality, Södermanland County, Sweden. The architectural features of the castle resembles 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).

• http://en.wikipedia.org/wiki/Stora Sundby Castle