Hillerød is a Danish town with a population of 36,043 located in the centre of North Zealand approximately 30 km to the north of Copenhagen, Denmark. Hillerød is the administrative centre of Hillerød Municipality and also the administrative seat of Region Hovedstaden, one of the five regions in Denmark. It is most known for its large Renaissance castle, Frederiksborg Castle, now home to the Museum of National History. Hillerød station is the terminus of one of the radials of the S-train network as well as several local railway lines. The town is surrounded by the former royal forests of Gribskov to the north and Store Dyrehave to the south.

North Zealand, also North Sealand, refers to the northern part of the Danish island of Zealand which is not clearly defined but generally covers the area north of Copenhagen. The Danish tourist authorities have recently introduced the term Danish Riviera to cover the area in view of its increasing importance for tourism. The area has three royal castles and offers resorts with beaches, as well as lakes and forests. In addition to Kronborg Castle, three of the North Zealand forest areas used for royal par force hunting are included in the UNESCO World Heritage List.