The pyramids at Giza
A small problem with the exposure setting on this photo, but in the end it actually turned out not bad.
The pyramids are just massive. I knew they were big (having seen them in films and photos and documentaries, etc) but just wasn't prepared at the sheer size of them in real life. When you're up next to them, just imagining how it was possible to build them thousands of years ago, before modern machinery is just mind blowing.
Looking though all my photos when I got back, I was disappointed that none of them showed the sheer scale of the pyramids. You can tell they're big, but you just don't get the sense of how big they really are. However, I noticed that at the very bottom right hand corner of the closest pyramid in this photo is a person. At least this helps give some idea of the scale. You may need to zoom in to see him.