The Virtual Worlds Museum just unveiled its first set of interactive hubs and exhibits within multiple virtual world platforms including Roblox, Horizon Worlds, Rec Room, and (yes!) Second Life, which I'm helping finalize as a longtime consultant. While I'm somewhat biased, I do believe this is the most ambitious effort to created a unified experience and knowledge base spanning all virtual worlds past and present. Here's the officially vision:
Our vision was to build dedicated museum exhibits and hubs inside these virtual worlds as places where the culture of each platform could be explored and mapped... Each hub is an anchor point in a growing map of immersive experiences that will soon be connected to our six core exhibits
The Roblox hub, for instance, was created by VWM volunteer and Roblox builder Joshman, and takes you through a Time Machine where you can travel through the nearly 20 year evolution of the platform. (Here's its official Roblox page.)
Go here for more info for exploring all the hubs. More details on the Second Life hub soon!