Hi Georg,
Thanks for your message, it depends on which terminal you docked, one is far from the city, the other two is close to downtown, the terminal ususally provides map of Keelung and Taipei for tourist:)
Hello Joey, thanks for asking, if you arrive via cruise, you could reserve your private tour(walking or via van) by clicking the private tour page on Keelung for a walk official site.
It's recommended to reserve it 1-3 months before cause the same inquiry usually happened on same day~
Many thanks and look forward to meet you in Taiwan!
Hello Kambalah, you can call +886-968-607676 to reach Keelung for a walk upon your arrival, there's other contact info to find us on our website, have a look and let us know if any, thanks and see you in Keelung!