The 2011–12season ushers in major improvements at these ski resorts.

Northstar California Resort, California
The News: Thanks to a $30 million investment, the mountain welcomes additional trails, ahigh-speed quad lift, a new 500-seat on-mountain restaurant—plus a 22-foothalfpipe designed by Shaun White. 5001 Northstar Dr., Truckee; 800/466-6784; one-day pass from $85.

Big Sky, Montana
The News: Theremodeled, slopeside Solace Spa & Salon expands its treatment rooms andsalon services, and Andesite Mountain adds 20-plus gladed acres. 1 Lone Mountain Trail, Big Sky; 800/548-4486; one-day pass $84.

The News: Nearly 100 never-before-open acres of glades, including some of the resort’ssteepest terrain, debut on Burnt Mountain. 5092 Access Rd., Carrabassett Valley; 800-843-5623; one-day pass $79.

Campiglio Val Rendena Val di Sole, Italy (pictured)
The News: Agondola connecting Madonna di Campiglio to Pinzolo links 93 miles of trailsinto one new ski area. 4 Via Pradalago, Madonna di Campiglio; 39-04/6544-7501; one-day pass $58.

Val Thorens,France
The News: This Trois Vallées resort introduces several new intermediate pistes, a33-person funitel lift, the four-star ski-in, ski-out Hotel Altapura andthe first five-star residency, Montana Plein Sud. 73440 Wal Thorens; 33-4/79-00-08-08; one-daypass $56.