5) The London Underground AKA The Tube. The tube may be the coolest and most convenient form of travel known to mankind. You can zip all around London on the cheap all day long.
4) London Walks. If you've never been on a London Walk - GO. If you've already done one or two - you know what I'm talking about. It's a great way to absorb a ton of London for a ridiculously low cost.
3) Free Museums. There are free museums all over Britain, but the ones in London may be the best of the lot. They're absolutely free, won't cost you a penny, and there's no admission charge. That and there's a ton of incredible stuff inside. And did I mention that they're free?
2) Hyde Park. Relaxing in Hyde Park is a great break from the hustle bustle of the city. Sitting by the ponds feeding swans and pigeons is surprisingly enjoyable.
1) International Flavor. You can meet people from all over the world in London. All nationalities and all walks of life are represented there. I met backpacking Aussies as I did my laundry, shared a room with a Bolivian looking for work and a home in the city, and swapped political views with a Canadian and a Swede. And that was all in one day.There were moments of absolute peace in Hyde Park, as I sat each afternoon with a sandwich and a lemon Fanta, silently reviewing all the things I had seen or done throughout the day. The cell reception was great too, and I enjoyed talking with my wife back home and sharing my experiences. These peaceful moments of reflection make up some of most treasured memories of London.
I miss London, even though I don't generally like big cities. There was so much to see and do that you can't help but feel like you have to go back and catch some of the things you missed.

