Chamizal National Memorial
Designated - · Bortle 8.0
Dark sky places in TX
Amistad National Recreation Area
Designated - · Bortle 2.0
Lake Meredith National Recreation Area
Designated - · Bortle 4.0
Alibates Flint Quarries National Monument
Designated - · Bortle 3.0
San Antonio Missions National Historical Park
Designated - · Bortle 7.0
Waco Mammoth National Monument
Designated - · Bortle 7.0
Palo Alto Battlefield National Historical Park
Designated - · Bortle 6.0
Big Thicket National Preserve
Designated - · Bortle 4.0
Fort Davis National Historic Site
Designated - · Bortle 1.0
Padre Island National Seashore
Designated - · Bortle 2.0