Winter is finally here (for the moment, anyway), but there's still plenty to do inside (and outside) in the Mile High City. From proms to late-night full moon-watching to adult skateboarding parties and more, we've rounded up the ten best events for this last weekend in February. And as a bonus, over half of them are free!

See also: - Oscar party roundup: where to watch this weekend in Denver and Boulder - Curious Theatre Company announces its 2013-2014 season lineup, and it's a stunner - 100 Colorado Creatives: Artist and Westword Artopia participant Kym Bloom

LOOPS: North American Handmade Bicycle Show Party, meet-up at the Colorado Convention Center (Friday, free to ride, $10 suggested donation for the party) Now four years strong, Loops -- a free, weekly bike ride around the city -- is throwing a big party in celebration of the North American Handmade Bicycle Show's massive gathering in Colorado. Starting under "I See What You Mean", aka the Big Blue Bear, at the Colorado Convention Center at 6:30 p.m., Loops founder Broox Pulford will lead the pack on a ride, and then it's on to Mouth House for a show featuring Thee Dang Dangs, The Photo Atlas, Zebroids and more.

Untitled #54 (Turf) at Denver Art Museum (Friday, $5-10) In conjunction with the current exhibition Georgia O'Keeffe in New Mexico: Architecture, Katsinam, and the Land, this 54th edition of the Denver Art Museum's Untitled series looks to the land for inspiration. Local guru of everything Andrew Novick will discuss the art of Astroturf, and as an added bonus, artist Nick Cave will hold open auditions for dancers for his summer exhibition, Sojourn. Untitled events are included with general museum admission.

Nerd Prom 2013 at Summit Music Hall (Friday, $10 advance, $15 at the door) A fun take on high-school redemption, this year's Nerd Prom is all about being extra nerdy. Dress in your finest formal wear and Buddy Holly specs and dance to prom-throwers Bop Skizzum plus Filthy T, the Messers and Medic; KTCL's Alf will be spinning between sets.

Art Lounge #3: Love On The Reel at Boulder Museum of Contemporary Art (Friday, Free) Made for and by middle- and high-school teens, this night at the museum will feature cinematic work by peers and an open discussion on healthy relationships and sexual awareness. There will also be a special screening of Inocente, the story of one girl's journey for self-discovery in the face of adversity.