The National Parks Service is offering free admission across the country in honor of the Martin Luther King Jr. holiday.

The NPS says it is the first of 10 days offering free entry to its 120 parks that charge an entry fee in celebration of the service’s 100-year anniversary.

Entrance fees, commercial tour fees, and transportation entrance fees are all being waved during the free admission days.

There are several sites run by the NPS that celebrate the life and legacy of Dr. King. They include his birthplace in Georgia, the 45-mile-long Selma-to-Montgomery trail where he led the famous Freedom March, and the MLK Memorial in Washington, D.C., in addition to several other sites related to his work.

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The National Parks Service has provided an event calendar website to make it easier to find services related to the holiday near you.