From the blog "Featured News"

Place Pages are Linden-hosted web pages  for every Second Life location listed in Search, which landowners can customize and make their own. These pages make it easier to discover great places in SL and give Residents another way to promote their destinations. We started a limited Beta program for this feature back in January 2017. This allowed us to respond with tweaks and polish to help get it to where it is today. This current offering is our “Unrestricted Access” release, which now all