Climbing deep into the ice well beneath the London Canal Museum (hard hats are provided), hardy visitors will get to see the collaborative work of artist Lyndall Phelps and physicist Ben Still – made up of almost a mile of brass rods, hundreds of acrylic discs, more than 28,000 glass beads and 36,000 diamantes. It's a great opportunity to see the incredible nineteenth century space and explore some cutting edge contemporary art. Tours take place every 20 minutes, with the last one starting at 3.40pm.