Seven wonders of the World

I'm likely to see the Taj Mahal soon, which is in my list of the seven wonders of the world. Here's mine. What's yours?

(1) Angkor Wat

Photo shapeshift with some rights reserved.

(2) Pyramids

Photo by Bruno Girin with Some rights reserved.

(3) Machu Picchu

Photo by Michael McDonough with Some rights reserved.

(4) Terracotta warriors

Photo by pete&brook with some rights reserved.

(5) Great Wall of China

This photo by chasingtheflow with Some rights reserved.

(6) Petra

This photo by nonmipare with Some rights reserved.

(7) Taj Mahal

This photo by Marco Pessoa with Some rights reserved.