I've visited all 63 major US national parks. Here are 10 of my all-time favorites.

A traveler who has visited all 63 major US national parks over the past 10 years has shared a list of their 10 all-time favorites. Among them is Grand Teton National Park in Wyoming, which the traveler says never gets old due to its unique peaks, wildlife, and hiking trails. Other favorites include Acadia National Park in Maine and Olympic National Park in Washington.

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