London is a great city trip destination, but sometimes the busy metropolis can also get a bit overwhelming. You could retreat in one of the numerous beautiful parks dotted around the city for a moment, but why not combine a free and unique public art trail with explorations of a far less touristy side of London? The Line art trail runs between the Queen Elizabeth Olympic Park and O2 Arena and is suitable for families, art lovers, ramblers and even thrillseekers!