FREDERIKSBORG

amtskommune (county), northeastern Sjlland (Zealand), Denmark, between the Isefjord and The Sound (resund). Its undulating surface of glacial sands and clays is lake strewn and well wooded, and the fertile loams support prosperous mixed farming. The amtskommune (area 520 sq mi [1,346 sq km]) was named after Frederiksborg Slot (castle; 1560) in Hillerd; the castle is now a national history museum. Its administrative centre is Hillerd, and its largest city is the port of Helsingr (q.v.). Kronborg Slot (castle) near Helsingr once controlled the northern entry into The Sound. Fredensborg Castle (built 171926), northeast of Hillerd, is the royal residence during the autumn. Pop. (1982 est.) 329,815.