A new study dove into National Park Service data to find the results.

But open public access often leads to crowds.

But the truth is that some parks are just more crowded than others.

Mountain reflections of Xanadu, Arial and Caliban peaks, Arrigetch creek, Gates of the Arctic National Park, Alaska.

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Hot Springs National Park is the most crowded park in the U.S.

Hot Springs National Parkin Arkansas is best known for its historic bathhouses that are fed by ancient thermal springs.

The crowds are particularly bad in the summer, during the parks high season.

Hot Springs National Park is located in South West Arkansas by the Town of the same Name

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