Yellowstone National Park is on course to set a new all-time attendance record, according to Yellowstone Insider, a website dedicated to Yellowstone National Park news.
Park officials said that between January and May of this year, a total of 515,693 visitors came to Yellowstone National Park, which is a 24 percent increase from this time last year.
In 2014, 415,185 visitors were recorded between January and May.
In 2010, Yellowstone hosted 3.6 million visitors. Park officials say they are on pace to beat that record in 2015.
Yellowstone officials said they expect even more visitors in July and August, which will increase their chances of setting records.
They said that busy holidays like Labor Day, Memorial Day and Independence Day are the park’s busiest weekends.
In 2014, Yellowstone was America’s 4th most visited National Park behind Great Smoky Mountains National Park (Tennessee), Grand Canyon National Park (Arizona), and Yosemite National Park (California).
Zion’s National Park was also one of America’s most visited parks, with 3.1 million visitors in 2014.