The 50 Best Places to Visit in the U.S.A.

Alaska: Go cruising for glaciers.
Cruises to Alaska offer many of the same sights as other cold-weather northern tours—icebergs, whales, snow-capped peaks—but with slightly more forgiving temperatures (highs can reach the 60s on a good day). Popular ports of call include Skagway, Ketchikan, and Juneau. Choose one that travels through Glacier Bay National Park and be sure to keep an eye out for Margerie Glacier. It’s the most popular in Glacier Bay, and one of the toughest: While other glaciers in the park are starting to recede, Margerie remains unchecked by climate change.