I'm taking a hastily planned last minute trip to Europe.
Here's my current itinerary:
pdx>ord>lhr>osl>arn>tll>fra>bud>lhr>pdx

I'm going to be in London for a meeting next Thursday and then Friday off to Oslo for a couple of days before going to Stockholm for one night. Then off to Tallinn for a couple of days before flying to Budapest via Frankfurt. I'll be in BUD for about five days - and am curious about interesting sidetrips - day or overnight via train from Budapest. I'm intrigued with Eastern Europe and haven't seen enough of it. Thoughts?

Also, anything 'hot' right now in Oslo, Stockholm or Tallinn?

For those interested in carriers: I'm flying United, SAS, Lufthansa, Estonian and Norwegian Air [LCC].