The British Heart Foundation Garden at Chelsea was not among my favorites. Veins, arteries, corpuscles and red blood cells just don't seem ready-made for integrating into a garden plan. At least there as no spurting blood fountain or anything. Kudos to the designers for their restraint, that's the first thing I thought of.
One nice feature of this garden was the inclusion of plants known for their healing properties and especially Salix caprea, a plant that provided clues to the development of aspirin.