I'm 68 and while in good fettle now, have had a few health challenges over the past five years, hopefully all settled down. So I've been given a lifeline bonus.....
My philosophy is, if I can afford it and I would like to do it, I research it first - that's usually half the fun, and then go for it! My DH is not one for travelling much now as he is mobility restricted. He will go but it's challenging for him. So I go alone. It has to be one of the most liberating things a woman can do for herself! I'm into Roman history so I go to any place that has Roman stuff like Ostia Antica, Herculaneum, Pompeii, Agricento etc. There are so many!
First time it's terrifying. Second time not so much, third and subsequent times I know the drill. I use public transport as much as possible since getting into a taxi alone is not something I'm comfortable with, but if I have to I will!
Other than that, I'm happy to potter around and discover my own city and surrounding areas. It's a tourist area but when you live here, you don't see what others spend a fortune to look at and experience!
As a pp said, there is a lot to be said for having home comforts and it's often the little things that bring happiness, not the expensive things.