National parks in Texas include Big Bend National Park, Guadalupe Mountains National Park and the Lyndon B. Johnson National Historical Park. Texas has a total of 13 national parks, and over 4.5 million people visit the parks each year.
The Guadalupe Mountains National Park features the world's premier example of a fossil reef from the Permian Era. At the Lyndon B. Johnson National Historical Park, visitors can learn more about the 36th president of the United States, starting from his ancestors, and visit his ranch, where he is buried. While visiting Big Bend National Park, visitors can see temple-like canyons carved from ancient limestone and hundreds of bird species.
Another national park in Texas is the Padre Island National Seashore, which protects 70 miles of coastline, dunes, prairies and wind tidal flats. It separates the Gulf of Mexico from the Laguna Madre, a hypersaline lagoon. The seashore includes 380 different species of birds and the Spanish shipwrecks of 1554.
The Palo Alto Battlefield National Historical Park preserves an important site during the U.S.-Mexican War, the first battle between U.S. and Mexican troops. On May 8, 1846, U.S. and Mexican troops fought in Palo Alto and started a two-year long war that changed North America.