I voted for the Colossus of Rhodes because I've always been fascinated with human sculptures and it is a magnificent figure - and one overlooking a harbour at that. Apparently it inspired the sculptor of the Statue of Liberty.
I'd say the Great Pyramid because besides the place where it's built (I think it accurately points to the 4 celestial marks of the world) and the size of the building, taking into account the technology that was available to them, it's the only one left today.
Still, I wish somehow I could see what the 'wonders' really looked like when they were first completed. The Hanging Gardens of Babylon look really interesting.
Clearly Martina Navrati.....hang on, this is non tennis, isn't it??
I say the Temple of Artemis, since it's the only one I've seen. What's left of it. Which is not much, just a site with about one column to show what was once there. :sad: The only one left is the great pyramid.