Over the past decade, I've traveled solo all 63 major US national parks. Parks like Isle Royale in Michigan and Dry Tortugas in Florida are only accessed via boat or plane. I've loved visiting ...

National park permit hikes help manage delicate ecosystems ... for a permit for one of the most extreme hikes in the US. With ...

A few major national parks did not make the list. Need a break? Play the USA TODAY Daily Crossword Puzzle. Top 10 best state parks in the US: Plus every state's most popular park ranked by ...