Early this year the folks at Space.com were musing about the possibility of creating interstellar national park sites. Apparently some congressfolk were listening, as a bill has been introduced to protect Apollo lunar landing sites on the Moon by creating a national historical park around them.
"As commercial enterprises and foreign nations acquire the ability to land on the moon," wrote the bill's authors, Rep. Donna Edwards (D-Md.) and Rep. Eddie Bernice Johnson (D-Texas), "it is necessary to protect the Apollo lunar landing sites for posterity."
Whether the proposed Apollo Lunar Landing Site National Historical Park legislation goes anywhere remains to be seen. But can you imagine the gear rangers would need to patrol it and provide interpretation to anyone who showed up to get their national parks Passport stamped?