We all know the Big Ben, Tower Bridge and the London Eye as some of the most famous highlights and places to visit in London. But did you know London also has a unique tourists attraction for dare devils and adrenaline rush seekers? It's called Up at the O2, and it does what the name basically says, you go up and walk over the famous O2 Arena. One of the coolest things to do in London right now and even a great activity with kids.