Nikon d5100 is a really descent camera body for whoever wants to take the kind of pictures you are watching right now!
This is a 16.2 millions pixels Camera from 2011, still available online I think, or second hand, this is obviously great to start photography from beginner to advanced users. Quality of picture is great and sharp. Do not forget to choose the right lens with this great body.
I’ve chose a Nikkor 18-200 f3.2.
This wide range from 18mm (almost wide angle) to 200mm alows to have a single lens for every situations, which is a good compromise while travelling.