This is a great interactive science museum featuring nasa artifacts and space facts. You can even travel to Mars and explore the surface!

This is a Star Trek museum that looks like the real Enterprise. You can go to the bridge, teleporter, engineering bay, the Captain's ready room, and everywhere else on the ship. Most of the rooms have either Star Trek trivia or they have interactive science activities. There is a planetarium, information about different parts of the universe, and short tests (more like games) to assess learning. One of the tests requires the test-taker to correctly identify different categories of craters on Mars.

Port Charles is one island among many in the region of Jabberwock in SecondLife. The islands are set in the 1700's in British colonial Jamaica, where the Royal Navy is battling with pirates. This island is British territory, but others are trading outposts controlled by pirates or smugglers dens that reminded me of the Pirates of the Caribbean ride at Disneyland. This is a role playing environment with fairly strict rules for battle, speech, and dress. After spending some time here I learned about the politics between the British and pirates, and how people dressed.