I haven't seen any of the
Original Seven Wonders of the World, but I have seen a few others. Out of
The "New" Seven Wonders of the World I've been to The Great Wall of China, of the
Natural Wonders of the World I've seen the Northern Lights, and of
The Seven Wonders of the Modern World I've gone through the Channel Tunnel and have visited the CN Tower several times.
Here's a list of some of the different
Seven Wonders of the World and here's an even bigger list (oddly enough) of the
Eighth Wonder(s) of the World. Additionally, here's
'19 of the strangest places on Earth' and here's
'22 Unbelievable Places that are Hard to Believe Really Exist' all of which seem quite amazing.
Sure it would be nice to visit all of these places before I die, but I'm content without ever doing so.