Go to Berlin. Tons of museums, palaces, modern history, parks, and its a very bikeable city. I was there for 3 days and keep wanting to go back for a full week in the city.
Ireland or New Zealand. No snakes.
May I recommend austria? Beautiful landscapes of lakes and mountains, lots of history and basically no dangerous animals.
EU Tour sounds good, just depends on how much time you got. Amsterdam provides a lot right by the airport.
So an open decree: I now have 4 day weekends starting next week, this means that if some of you are planning to do a thing I got the time to go. Let me know where it is so we can do some things.