The Northumberland National Park and Kielder Forest have jointly become the largest Dark Sky Park in Europe.
It means they're now able to control levels of light pollution and make sure the views of the night sky are kept clear.
Nocturnal animals living in the park will also benefit because it means conditions are closer to their natural habitat.
The area will now be called the Northumberland Dark Sky Park.
The area becomes only the second Dark Sky Park in Britain.
Where else can you find dark sky parks?
Natural Bridges National Monument - Utah, USA
Cherry Springs State Park - Pennsylvania, USA
Galloway Forest Park - Scotland
Zselic National Landscape Protection Area - Hungary
Goldendale Observatory Park - Washington, USA
Clayton Lake State Park - New Mexico, USA
Hortobagy National Park - Hungary
Observatory Park - Ohio, USA
The Headlands - Michigan, USA
Big Bend National Park - Texas, USA
Death Valley National Park - California, USA
Chaco Culture National Historical Park - New Mexico, USA