Just some random links:
- The Statue of Liberty
- Former site of the Twin Towers, which are still visible in Terraserver data
- Bombers at Travis AFB
- The Chabot Space and Science Center, where I teach telescope making from time to time. The waypoint set by Google isn't actually the location of the Science Center, it's down the hill where you take an exit on a windy road.
Thiago has created a Coin Sampler, basically a loop based synthesizer that is programmed by moving coins on a rotating turntable. As each coin passes under an IR sensor, it triggers the playing of a particular sound.
Addendum: Check out what this MIT guy did with two turntables and a similar idea.