Winter is a surprisingly great time to explore some of America's best national parks, because the crowds are up to 90 percent lighter this time of year.

The granite cliffs of El Capitan and Half Dome gleam under blankets of snow in the crisp mountain air. Fewer visitors mean ...

Winter transforms America's national parks into breathtaking wonderlands, far from the crowded summer scenes you might expect. While most visitors flock to these natural treasures during warmer months ...