1. The Island

It’s usually a balmy 78 degrees inside this 24,000-square-foot volleyball mecca in southeast Denver. If the thermostat isn’t enough of a draw, there are six sand courts you can rent (from $40 for four people), lessons (prices vary), and multiple leagues for two-, four-, and six-player squads, many of which need a free agent or two to fill out their rosters. Celebrate victory with your new teammates—or take the sting out of defeat—at the indoor beach bar, which is stocked with 60 kinds of tequila. 2233 South Geneva St.

2. South Broadway Country Club

If your partner is antsy for the front nine to thaw, get her out of the house by booking her a tee time at South Broadway Country Club (Overland and Berkeley; $50 per hour). Its radar-equipped Trackman simulators won’t just help her handicap; they’ll also allow your partner to virtually visit 200-plus drone-mapped international links. In need of a 19th hole? The Tennyson Street location is home to the Crow’s Nest, a cocktail bar named for the iconic upstairs accommodations inside Augusta National Golf Club’s clubhouse. Unlike Augusta, however, you don’t have to worry about offending any bluebloods: The SBCC’s laid-back atmosphere is captured by its motto: “nonmembers only.” Multiple locations

3. 5 Star Salt Caves

Ever notice how your lungs seem to open up when you’re at the beach? Re-create the experience without getting sand in your shorts at this Wash Park West wellness center. Its human-made, pink Himalayan salt cave ($45 for 50 minutes) is designed for halotherapy, in which clients breathe in tiny salt particles that some studies suggest can break up mucus and reduce lung inflammation, among other benefits. Health perks aside, the facility’s softly illuminated grotto is relaxing enough to help you forget about the four inches of snow that await you outside. 722 S. Pearl St.

4. Apex Center

It’s practically impossible for your groms to be bored at the Apex Center’s indoor water park. In addition to the lap pool, there’s a 150-foot-tall tube slide, vortex pool, and zero-depth play beach with fountains, waterfalls, and geysers. But if the kids need extra stimulation, the center’s admission fees (day passes cost $5.50 to $11) include access to a rock climbing wall and indoor playground complete with a treehouse. Just don’t accidentally wander into the two adjoining NHL-size ice rinks lest you freeze your sandals-clad toes off. 13150 W. 72nd Ave., Arvada