The Looking Glass, the joint creation of Marcus Inkpen and Sharni Azalee, is an very well designed build, and a destination you must visit at least once in your Second Life. The Looking Glass (and I quote) "features an art gallery, live music, particle shows, poetry readings, home and garden items, buildings and fashion from fantasy to surreal to steampunk to gothic". Viewing The Looking Glass works best at night or dusk since there are many glowing touches that cannot be seen in direct black light. Well worth a visit if you have not yet been.
To find out more about The Looking Glass: