My Latest trip was on a Princess Cruise to countries around the Baltic Sea. The port of calls included; Copenhagen, Stockholm, Helsinki, St.Petersburg, Tallinn, Gdansk, & Oslo. The immense history from any of these ports could fill many text books and days of lectures. If history is of interest it is recommended to take in as much as you can by going on tours at each port.
A cruise wouldn’t be classified as party material but with the right group can be made extremely fun. Service is hand and foot and enough with enough amazing food to munch out on 24 hrs a day. The only thing you have to pay for is the drinks which are just as expensive as any bar. Cruises definitely can be on the expensive side but worth it for being incredibly well fed, incredible service, perfect picture opportunities and a chance to knock off 7 countries in 10 days.