I recommend visiting - Avenue of Volcanoes, Ecuador
As I'm originally from Suffolk anything that's a little high and mountain-like is rather exciting. I loved the volcanoes for many reasons but the main one was that they were an unexpected take-your-breath-away moment on my travels.
I didn't think I'd be blown away by them but my first views of Cotopaxi and Chimborazo and all the others were to be savoured. The fact that you know a lot of them are active, some are still snow-capped and you can't turn your head without seeing another one is simply stunning. It makes you feel very small!