If you're planning a bit of sightseeing head to Downtown Boulder Historic District— just one of the monuments in Central Boulder. It's also full of great shops and restaurants, so you can spend the afternoon having a wander.
You can catch an event at Folsom Field, located 0.4 mi (0.7 km) from central Boulder. Why not take a stroll along the riverfront and watch the sunset while you're here? It's also full of great shops and restaurants, so you can spend the afternoon having a wander. If you think Folsom Field is cool, you also might like CU Events Center and The Spot Bouldering Gym, both located nearby.