Bow your head, say a prayer and maybe even light a candle in Tonsberg Cathedral. This important place of worship may not always be accessible, so check ahead for times if you'd like to go inside.
You'll find this principal church in Tonsberg. Once you've explored everything you can at Tonsberg Cathedral, head to nearby Tønsberg Castle, Slottsfjellsmuseet, and Edvard Munch House.