Denver Sunset 60x20 from Matt Santomarco Photography.Panoramic image features City Park with the Denver Skyline and Rocky Mountains serving as the perfect backdrop.City Park is the largest and most notable park in Denver and is in the perfect location to view Colorado sunsets.Denver is one of the few cities that was not built on a road, river, or railway.Rather it was founded where the first few flakes of Gold were found in 1858.