Using your wide angle
A wide angle lens can fit a lot more into the photo than a regular lens, creating great shots like this one of the Brooklyn Bridge. They are particularly good for landscapes. You will also find that a good telephoto lens will be very handy when travelling, but not all lenses will be able to do both. If you have a SLR, either one big lens that can do both, or two separate lenses that you can put on your camera whenever the need arises.