Paris France Optional +
I went alone last summer (06). I met some wonderful people…I liked it so much, that I am going on the London + Paris trip next week (alone again).
Winter is an excellent time to go to Europe. There are next to no lines for the museums, you can experience the cities like the locals do and everything is cheaper! Plus, Christmas and New Year's Eve in Europe are very special.
If you are doing a time out tour (staying in hotels), a travel iron/hairdryer will come in handy as many european hotels do not provide these facilities.