What you should know is that on April 19, all national park entrance fees are waived, so visitors can also celebrate. Here are which national parks you can visit in Texas for free on Saturday, April 19.

This year's theme, "National Park Playlist," includes daily celebrations tied to music and memory, aiming to connect visitors with parks through creative interpretation and commun

There are six National Parks within an hour and a half radius of the heart of Washington, D.C., that can be visited on Saturday at no cost.