no, it's not big ben or a bridge or any of the other landmarks around london. i was multitasking, dressing to go out for the evening and talking to someone on the phone when i looked out the window of my friends apartment. i was literally speechless for a moment as i saw the laser. my friend has an awesome apartment across from the royal navy observatory where they mark greenwich mean time and at night there is a laser that marks GMT line.
that's pretty cool right? because there's only one of those in the world and the rest of the world's time is based on that laser. 0 degrees longitude! awesome