I bet they have a Mars Smithsonian museum one day. Perhaps it will overlook the Hellas Sea. Where they build it on Mars, all the probes, rovers, and even orbiters will probably end up there.

Much sooner will be the need to preserve historical sites on the Moon. A clumsy or mischievous tourist could easily destroy Neil Armstrong’s first foot print- Man’s first step on another world.

Perhaps around each Apollo site a raised enclosed area with attached raised and closed walkways could protect these historical sites, but allow people to view them.

Have you ever been to Yellowstone? Many features are protected by boardwalks.