Saturday. Springtime fun takes to the skies at the 10th annual Arvada Kite Festival. Celebrating National Kite Month, the day-long party features fun up in the air and on the ground. Bring along your best kites to join in contests for kids and adults; kites will also be available for sale onsite. Members of the Foothills Kite Club will demonstrate their soaring skills, too. There’s also live music, games, kiddie rides, kite-making and lots of tasty food to sample. 10 a.m. to 4 p.m. Saturday. Robby Ferrufino Park, 74th Avenue and Carr Drive, Arvada. Admission is free. For more information, call 720-898-7400 or visit arvadafestivals.com.

Saturday-Sunday. Get an up-close look at some of Denver’s landmarks—and make a few of your own—during Doors Open Denver. The annual Doors Open Denver event welcomes the public inside notable structures and sites all over town, from Rockmount Ranch Wear to Riverside Cemetery. Go on self-guided or expert-led tours—build an itinerary and explore the city. Youngsters can test out their architecture skills at Denver Box City on Saturday. The free activity shows kids the basics of construction—getting permits, designing buildings, gathering matierials—as they build a cardboard city inside the Wellington E. Webb Municipal Building. Architecture pros from the American Institute of Architects will be on hand to offer help, too. Doors Open Denver: Saturday and Sunday; times vary by location. Admission is free. Tickets for expert-led tours are first-come, first-served at the Ellie Caulkins Opera House (14th and Curtis Streets) at 8:30 a.m. Saturday and Sunday. Box City: 10 a.m. to 2 p.m. Saturday. Wellington E. Webb Municipal Building, 201 W. Colfax Ave. Admission is free, but reservations are requested. Call 303-446-2266 to reserve. denvergov.org/doorsopendenver; aiacolorado.org

Kathleen St. John