Adventure

Grand Canyon Wander deep within the canyon on a guided trail; mosey into the depths on a mule; step on the Skywalk and stand 4,000 feet above the Colorado River with only a glass floor beneath your feet; take an airplane or helicopter tour; visit the field institute to learn about the history, ecology, geology, and archaeology of the canyon. Grand Canyon, AZ; +1 928 638 7888. Admission.

Hoover Dam and Discovery Tour Hover over the Hoover on a helicopter tour; cross the border into Nevada for glimpse of this concrete, modern marvel; walk to the middle of the dam for an awe-inspiring photo op; plan for a tour of the powerhouse to investigate the inner-workings of the dam. 30 miles southeast of Las Vegas on US Highway 93 at the Nevada-Arizona border. +1 702 494 2517. Fee.

Sabino Canyon Wonder at the Santa Catalina Mountains; swim in a canyon stream or forest pond; trek to Seven Falls; take a tram through the Coronado National Forest into Bear Canyon. 5700 N. Sabino Canyon Rd., Tucson, AZ; +1 520 749 8700. Fee.

Saguaro National Park Amble along the Desert Discovery nature trail; visit the east side of the park for biking, horseback riding, and camping; pack your flashlight for a ranger-led moonlight walk. 3693 S. Old Spanish Trail, Tucson, AZ; +1 520 733 5153. Fee.

Slide Rock State Park Glide down the slippery chute of this natural waterslide and belly flop into the waiting water below; pack a picnic and eat along the shore. 6871 N. Hwy 89A, Sedona, AZ; +1 928 282 3034. Fee.

Sunset Crater Volcano National Monument Stare at the volcanic cinder cone stretching over 1,000-feet high; climb the 350-foot Lenox Crater; explore the lava features on the mile-long Lava Flow Trail. 15 miles north of Flagstaff off Highway 89; +1 928 526 0502. Fee, includes Wupatki National Monument.