I went to London, and, coming from Paris, it thoroughly failed to impress me. I stayed near King's Cross, and my most memorable sights in that area are:
- a lot of hotels, and quite expensive considering what you get,
- a phone booth where someone had puked,
- the big building near the station, which I didn't get a chance to visit.

Since we weren't staying long, we didn't do all the touristy stuff, but we did walk over one of the bridges to the park near the tower of London (which I didn't get to visit either), the park was ok. We saw a bit of Picadilly (I think, where all the stores are) but didn't stay because it's too crowded.
Thankfully, Phoenix and I were meeting with someone from FFL there, which made the weekend bearable.