1-The Channel Tunnel

2-The Clock Tower (Big Ben)

3- The CN Tower

4-Eiffel Tower

5-The Empire State Building

6-The Gateway Arch

7-The Golden Gate Bridge

8-The High Dam

9-Hoover Dam

10-Itaipu Dam

11-Mount Rushmore National Monument 

12- The Panama Canal

13-The Petronas Towers

14-The Statue of Cristo Redentor

15-The Statue of Liberty

16-The Suez Canal

17-The Sydney Opera House

A- St. Louis, USA

B- Arizona/Nevada, USA

C- Toronto, Canada

D- English Channel

E-Panama

F- Rio de Janeiro, Brazil

G- London, England

H- New York City, USA

I- Aswan, Egypt

J- Kuala Lumpur, Malaysia

K- Brazil/Paraguay

L- San Francisco, USA

M-Egypt

N- New York City, USA

O- Australia

P- Paris, France

Q- South Dakota, USA

l-D, 2-G, 3-C, 4-P, 5-H, 6-A, 7-L, 8-I, 9-B, 10-K, 11-Q, 12-E, 13-J, 14-F, 15-N, 16-M, 17-O