Hi, I'm going overseas in a couple of weeks and would love some input as to the best/ideal lens to use. Photos will be of people, landscapes, architecture etc. Looking for a lens that can stay on the camera all of the time. I'm a beginner so would appreciate if you could give some reasons as to why it is ideal rather than give me the model of the lens. This way I could learn more about lens choice.

I currently have a pretty standard kit I think. Nikon 18-55mm vr and 55-300vr.

Look forward to your suggestions. Thanks.