Many of the larger UK gardens have good displays of Camassia. The RHS gardens in Wisley and Rosemoor, and The Garden House in Devon come to mind with meadow displays, but there are several others. Prince Charles has something similar. I recall that the Saville Garden in Windsor had a display of the white leichtlinii that rapidly got out of hand due to self seeding, and I have seen very tall seed stems in RHS Rosemoor that I think are the "white" form. The shorter cusikii is less common but less obvious so maybe I miss it. The Avon bulbs Stella hybrids are various shades of blues , mauves and almost pink, and there is the larger sterile Electra. A pity the individual flowers are so short lived. I find light shade the best. Brian Whyer, Buckinghamshire, England, zone ~8