Six Out of Seven

I have actually seen only six out of the different lists of Seven World Wonders. These are:

1. The Grand Canyon (U.S.);
2. The Golden Gate Bridge (U.S.);
3. Hoover Dam (U.S.);
4. The Petronas Towers (Malaysia);
5. The Banaue Rice Terraces (Philippines); and
6. Sydney Opera House (Australia).

I have places to go and people to meet. I gotta go!