World's most dangerous tourist attractions

The Poison Garden, Alnwick Gardens, Northumberland

Alnwick Castle is one of the most popular tourist attractions in the north of England but there's another site in the area which is a little more thrilling. Visitors are wise to heed the warning on the gates at the Poison Garden as some of the plants found in the garden have the potential to kill. The Duchess of Northumberland created the garden with a view to educating the public on some of the world's deadliest plants. Poisonous plants found in the gardens include strychnine and castor oil seeds.