3 Must-See Hop-off AttractionsHop aboard one of our open top buses and explore Stockholm and its sights at your own pace. Our buses stop at carefully chosen spots. One destination you cannot miss is The Royal Opera House, at Bus Stop 1, one of the greatest attractions in Stockholm since it opened in the 18th century. Hop-off at Bus Stop 18 and roam around the glorious Strömgatan, located right on the waterfront. It looks even better lit up at night time! Another must-see destination is the City Hall at Bus Stop 4, one of Sweden's most famous buildings. A guided tour is highly recommended.