The Poison Garden: Where Plants Can Be So Dangerous They Are Caged

Aside from the poisonous plants, Alnwick Castle also features sculptures, waterfalls, and vibrant plant life. Percy and her husband became the new duchess and duke of the northeastern England county when her brother-in-law died in 1995 and they led the redevelopment. The once empty area is now considered the largest collection of European plants in the UK.