In 2010, I made an audio-narrated flying carpet tour of the International Spaceflight Museum in Second Life. It visits some of the key exhibits and gives an overview of the early history of the museum. I just did a video capture, edit, and upload to YouTube, so now you can experience the tour as a video:
This is just a video of the tour; you can take the real tour in SL at http://slurl.com/secondlife/Spaceport%20Alpha/50/80/24