Southern Denmark is, for a lot of families, a pilgrimage: this is Billund, the birthplace of LEGO and home to the original LEGOLAND, the one all the others copied. The resort anchors the region with its rides and astonishing LEGO builds, backed up by the Lalandia water park and the WOW Park adventure course nearby, and Billund itself has grown into a creative, welcoming little town built almost entirely around keeping children happy. For families with LEGO-obsessed kids, no other destination quite delivers the same wide-eyed payoff.

There is real Denmark beyond the bricks, though. The South Funen Archipelago invites island-hopping by ferry, the island of Fanø hands over wide sandy beaches, dunes, and seal-watching, and the Wadden Sea National Park, a UNESCO site, runs guided walks across tidal flats teeming with wildlife. History turns hands-on at the Ribe Viking Center, where kids dress up, try crafts, and join Viking games in Denmark's oldest, prettiest town. The whole region is safe, calm, and easy to navigate, the Scandinavian way. The accommodation ranges from beachside holiday homes and countryside inns to family resorts, many with playgrounds, children's activities, and self-catering options. Southern Denmark pairs the world's original theme-park magic with gentle nature and Viking adventure, which makes it a uniquely Danish kind of family holiday.