Here are the top iconic landmarks in the USA:

1. Statue of Liberty, New York City, NY
2. Golden Gate Bridge, San Francisco, CA
3. Mount Rushmore, Keystone, SD
4. Empire State Building, New York City, NY
5. White House, Washington, D.C.
6. Grand Canyon, Arizona
7. Space Needle, Seattle, WA
8. St. Louis Arch, St. Louis, MO
9. Hoover Dam, Nevada/Arizona
10. Alcatraz Island, San Francisco, CA
11. Washington Monument, Washington, D.C.
12. Freedom Tower, New York City, NY
13. The Las Vegas Strip, Las Vegas, NV
14. Times Square, New York City, NY
15. Independence Hall, Philadelphia, PA
16. USS Arizona Memorial, Pearl Harbor, HI
17. Hollywood Sign, Los Angeles, CA
18. Niagara Falls, New York/Ontario, Canada
19. The National Mall, Washington, D.C.
20. The Brooklyn Bridge, New York City, NY

These landmarks are known for their cultural, historical, and architectural significance and attract millions of visitors from around the world each year.