[Frinkenstein]

My GF wants to go on a 3 week trip to Europe with me. She is an Art History major and is highly interested in going to Museums and galleries, etc. Personally, I'm not into Art and museums very much.

The basic plan is to do 5 days in each of London, Rome and Paris. We'll obviously do some of the most important things like seeing the Eiffel tower and the vatican...

But, I'd like to hear some suggestions for some other cool things to do in Europe. Perhaps some suggestions that involve more adventurous things to do. Possible examples might include some cool hikes to do or ???

Also, I'd be open to hearing about cool/adventurous things to do in Cities other than London, Rome and Paris.

Thanks in advance.