Hike the trails at Chautauqua! The first thing anyone should do when arriving in Boulder (especially with out-of-towners in tow) is to get an up-close peek at The Flatirons, Boulder’s signature mountain range that has long served as a symbol of this one-of-a-kind town.
Architecturally stunning and full of lovely gathering spaces, the CU campus is worth a stroll through just to admire the setting. But there are also a few attractions that are worthy of your can't-miss list, too: Old Main (the school's original building dating back to 1876), Mary Rippon Theatre (home stage for the Colorado Shakespeare Festival), Macky Auditorium and Fiske Planetarium being chiefly among them.
If you’re a beer lover, one of the “Must-Dos” in Boulder is to take part in a brewery tour. Every brewery offers a unique aesthetic and a wide range of menu options, so whether you are biking around town or wandering down Pearl Street, you can stop in for a tour and enjoy an ice-cold beer. Avery Brewery & Upslope Brewing are a few worthy spots to check out.