There are lots of things to see in Denver. You can go to an amusement park (Elitch Gardens), if you are in to nature you can go hiking or check out the botanical garden, The Denver Nature and Science Museum is definitely worth checking out, you can check out a football game and there are hundreds of restaurants in and around town.
If you are an art connoisseur, then you must go to the Denver Art Museum.
Entrance fee for Colorado Resident / Adult : $10.00$8.00$8.00
Admission for kids: Free everyday
General admission is free for everyone on First Saturdays$13.00
Parking Fee: $ 9.00 for whole day
Denver Art museum is truly a great experience. It is the second museum we have visited in Denver. There are tons of things you can see there. The architecture is spectacular. They also offer free days on special occasions.
Denver Art Museum has a souvenir shop and the ticketing booth located on the first floor. The second floor display famous paintings and unique sculptures from artists like Matthew William and others.
The Denver Art Museum even has an area for kids to enjoy art.
You can visit their website at http://denverartmuseum.org/