North America just north of that sharp right turn North America makes on the Atlantic coast.
It sounds to me like you are restricting yourself due to either space or weight requirements, here is my advice. If you can beg or borrow a 18-200 lens for the Nikon that would be my choice for the trip. There are several companies that make that lens, Tamron, Nikon, etc. the Nikon with a Tamron 18-200 is what I find in my hands most often when I go on any kind of trip where I am not exactly sure what I will be shooting. If you are worried about a huge ding in your travel budget, I will tell you I got my Tamron 18-200 Macro (the no IS/VR, budget version) on E-bay for under $100 USD, even new they are selling for around $200. People that are unwilling to sacrifice depth of field in low light, or bought a camera without a focus motor in the body are selling 18-200 lenses to get the Vibration Reduction motor in the lens versions so you can pick up the "less desirable" ones cheep right now. If you can't carry a "bag O' glass" that may be the lens you want. Don't get me wrong, I do love my Nikon 28mm, and it is a better 28mm lens than the 18-200, but for vacation, it's wide zoom all the way for me. Enjoy your trip!