Visualize being a cowboy…Learn the tango…Build a green oven…Feel the heat of award-winning chili…and find the answer to the question for the ages, “Can a mere human build a nest?””

“A Year on the Ranch,” paintings by Sara Bell, will be exhibited 11 a.m.-6 p.m. Sunday and Monday, May 6 and 7, at Viva Cocolat, 110 Petaluma Blvd. N. Admission is free. More information: 778-9888, Sara Bell at 772-7634 or sara@simplelinesstudio.com.

Drop in on an Argentine tango class 7:15-9 p.m. Thursday, May 10, at P.O.S.T. Wellness by Design, 224 Weller St. Learn about the culture while performing the dance moves. Fee is $15, singles and couples, beginners or who want to shake off the rust. More info: 778-6837 or donna.agoitia@gmail.com.

Learn how to build an outdoor cob oven with earth from your own backyard 7-9 p.m. Thursday, May 10, at The Seed Bank, 199 Petaluma Blvd. N. Miguel Elliott, owner of Living Earth Structures in Sebastopol, will provide a free presentation, followed by a question and answer period. More info: 773-1336 or paul@rareseeds.com.

“Petaluma The Musical: Steampunk,” a fantasy-filled Victorian era story of the Petaluma Sky Pilots, opens Friday, May 11, at the Petaluma Woman’s Club, 518 B St., and runs through May 20. It’s written, produced and performed by local talent, with performances at 7 p.m. Fridays and Saturdays, 3 p.m. Sundays. Tickets are $15 at ptm.eventbrite.com. More info: colette@satoristudioz.com.

The annual Great Petaluma Chili Cook-off is ready to throw down 1-5 p.m. Saturday, May 12, at Herzog Hall at the Sonoma-Marin Fairgrounds, 175 Fairgrounds Drive. Salsa and beer tasting will be additional treats. More info: 763-8920 or greatchilicookoff.com.

Treat Mom to a free ranger-led family hike noon-2 p.m. Sunday, May 13, at Tolay Lake Regional Park, east of Lakeville Highway at Cannon Lane. Enjoy breathtaking views of the Bay Area while learning about this property’s rich biodiversity and cultural history. Info: 789-9644.

— Sheldon Bermont