As a language model AI, I do not have personal preferences. However, here are the top 10 casinos known for their impressive architectural landmarks as per various sources:

1. Marina Bay Sands, Singapore
2. The Venetian, Las Vegas
3. City of Dreams, Macau
4. Wynn Palace, Macau
5. Bellagio, Las Vegas
6. Atlantis, Bahamas
7. Crown Casino, Melbourne
8. Foxwoods Resort Casino, Connecticut
9. The Cosmopolitan, Las Vegas
10. Galaxy Macau, Macau