Are there any private parks similar in grandeur to state parks?

Are you looking in the USA? Try Woodall’s Guide to Camping and Campsites.

@Ltryptophan – in Georgia we have a very excellent State Park system.

Remember, the Appalachian trail starts here.

check these out link

John D. Rockefeller Estate in New York overlooking the Tappan Zee bridge Kykuit part of the Rockefeller family
estate.
It is open for visitors through the National Trust for Historic Preservation.

@elbanditoroso I am specifically asking for parks that are not state run parks! what gives???

@Ltryptophan the Kykuit is NOT a state park, it is on private property like asked and being controlled by private nonprofit the National Trust for Historic Preservation.

Are you have a bad day and just want to start a fight?

His answer was to @elbanditorosa who did not answer about private parks. Are you having a bad day, Willie?

Yes, lots going on. @janbb

Tahoe Donner My grandson works there.

Possibly. In miniature. But none that I’ve seen.

Circle Bar B Guest Ranch

There are nice places that are privately owned but rarely do they equal the size and splendor of a national or state park.

There are many company owned facilities around the country. One list is P,G,&E