Plans/dreams for my winter vacation continue. I just found a reason to go to Berlin despite the frigidity: This awesome hotel. The Radisson Blu in Berlin hosts a massive cylindrical aquarium in the center of its lobby called the AquaDom, and you can actually take an elevator ride through it. Plus, thanks to the fantastic Club Carlson promotiosn, I have accumulated enough points for three free nights at this fascinating hotel. Definitely PSFA material.