Dale Chihuly has an exhibition - Beyond The Object - at the Halcyon Gallery in Bond Street running until the 18th May 2014. His glass installations, shown in 200 museums worldwide - one is permanently displayed in London's V & A, are beautiful, very large and dramatic.
In the Botanical Gardens in Phoenix, Arizona is the most amazing garden installation. Beautiful pieces of glass sitting alongside the plants. You can see a video of pics here, but suggest you watch it with the sound down, the music is truly awful!