I love traveling but hate planning for it. My wife does such a good job of that. I'm good on the ground, asking around and finding things to do and discover once we get somewhere.
I love walking in general, as long as the scenery is interesting or new.
I like things to be comfortable, but they don't have to be really fancy. The creature comforts (especially a good bath tub) are important to my wife, so I do like to make sure that we have them when we travel.
I love reading and collecting old paperbacks, so I always try and suss out the used book stores in places we visit. You never know when you will stumble upon a gem.