1. Historic downtown area: The city of Denver is home to a wide variety of historic buildings and monuments, many of which have been preserved and restored to their original beauty.

2. The Rocky Mountains: Denver is the closest major city to the Rocky Mountains, providing a great opportunity for outdoor recreation and exploration.

3. Cultural attractions: Denver is home to several world-class art galleries, museums, and theaters, making it the perfect destination for culture vultures.

4. World-class food: From classic steak houses to innovative fusion cuisine, Denver is a great destination for foodies of all tastes.

5. Shopping: Denver is home to several large shopping malls and a variety of retail districts, meaning you can find something for everyone.

6. Professional sports: Denver is home to the Denver Broncos, Denver Nuggets, Colorado Rockies, and Colorado Avalanche, making it a great place to catch a game.

7. Outdoor activities: With so many outdoor activities available, Denver is a great place to get outdoors and explore nature.

8. Music and nightlife: Denver has an active music scene and several vibrant nightlife districts, making it a great place to hit the town.

9. World-class skiing: Denver is a short drive away from some of the best ski resorts in the country, making it an ideal winter getaway.

10. Affordable: Despite its many attractions, Denver is surprisingly affordable, making it an ideal destination for budget travelers.