- Denver is the capital and largest city of Colorado, located in the western United States. It is known for its stunning natural beauty, being situated at the base of the Rocky Mountains. The city has a population of over 700,000 residents, making it the 19th most populous city in the United States. Denver is a vibrant and growing city with a thriving arts and culture scene, diverse neighborhoods, and a strong economy. It is also known for its outdoor recreational opportunities, including hiking, skiing, and mountain biking. Denver is home to several professional sports teams, including the Denver Broncos (NFL), Colorado Rockies (MLB), and Denver Nuggets (NBA). The city's attractions include the Denver Art Museum, Denver Botanic Gardens, Denver Zoo, and the famous Red Rocks Park and Amphitheater.