No one would ever travel to Egypt without taking pictures of the pyramids or to Sydney and not take photos of the Opera house. Yet, people have seen so many pictures of both it may be difficult to excite interest in seeing your pictures. The challenge is to make your photographs different.
I like to start by looking at the foreground and background. Move around, step back, climb a hill and see how the background changes. Pay attention to what you might put in - or want to avoid in the foreground. You definitely want these special landmarks to recall your travel, but you want something special about them to add interest and create a picture that captures attention because it is unique. Check out the traditional picture of the Sydney Opera House - then my version taken from a distance with an extended zoom and the city skyline in the background. Yes, I did take a picture of the pyramids surrounded by desert, but the one of Cairo in the foreground and the pyramids as the background to the city was the more interesting.