Following pickup at Stockholm's cruise port, board a comfortable tour bus for a scenic ride through downtown Stockholm. Depending on the location of your ship's dock (Frihamnen or Stadsgården) get views of Södermalm, Djurgården, or Gärdet. If you arrive at Nynäshamn, the bus will take you into the city (45 minutes approx.)
Take a guided tour of the Vasa Museum, home to the world's best-preserved 17th-century warship, which sat on the floor of Stockholm Harbor for more than 300 years.
Resume the scenic drive through the city, making stops at Riddarholmen Island and Fjällgatan. See the Royal Opera, the Palace, the Parliament Building, and other highlights, as well as the scenic Strandvägen and tony Östermalm.
In Gamla Stan, Stockholm's Old Town, disembark for a walking tour. Wind through the medieval town's narrow alleyways to see landmarks such as Järnpojk and Storkyrka. Once your tour winds down, spend some free time window shopping or grabbing a bite to eat before returning to the port.