Alnwick Gardens
Every year, 600,000+ tourists risk life and limb to visit the Alnwick Gardens. Well, it’s only a risk if you touch the plants there. Alnwick Gardens has the largest collection of poisonous foliage, most of which are tucked neatly into cages with giant warning signs pleading museum-goers to stay far away. Nobody has died from exposure to anything poisonous in the garden, but that doesn’t mean there won’t eventually be a casualty.