Gateway National Recreation Area: Jacob Riis Park Beach IV

Gateway National Recreation Area: Jacob Riis Park Beach IV

Gateway National Recreation Area: Jacob Riis Park Beach III

Gateway National Recreation Area: Jacob Riis Park Beach III

Aztec Ruins National Monument

Aztec Ruins National Monument

Mesa Verde National Park II

Mesa Verde National Park II

Mesa Verde National Park I

Mesa Verde National Park I

Hovenweep National Monument

Hovenweep National Monument

Saint Paul's Church National Historic Site

Saint Paul's Church National Historic Site