Explore Scandinavia's oldest town, founded by Vikings in 871 AD and steeped in medieval maritime history. Climb Slottsfjellet Hill to the ruins of the 13th-century royal castle and scale the 17-meter tower for panoramic views across the Oslofjord, where Viking longships once navigated. Wander through the charming Old Town with its traditional wooden houses, narrow cobblestone streets, and historic harbor where fishing boats still dock daily. Visit Haugar, the Viking cemetery, to see ancient burial mounds revealing the town's Norse origins, then explore the Tonsberg Museum showcasing Viking artifacts, medieval weapons, and reconstructed fortress models. Stroll along the scenic waterfront promenade lined with cafes serving fresh seafood and traditional Norwegian dishes like fiskeboller and krumkake. The town's maritime atmosphere comes alive during summer festivals celebrating its Viking heritage with traditional music, crafts, and reenactments.