Located on the Heligan Estate, the gardens are therefore part of the historic ancestral home of the Tremayne family. The gardens were bought and developed by the family in the 16th century. However, in the nineteenth and early twentieth centuries, the gardens were progressively abandoned, especially at the outbreak of the first world war when many of the men who would have worked to maintain the gardens left to go fight, most of them never returning. The gardens were never sold or developed in the decades that followed and were left quietly neglected for years. That is until the 1990s, when they were rediscovered and became a project of conserving and redeveloping the incredible nature on the grounds, much of it being televised in various programs.
In 2013, the Imperial War Museum recognised Heligan’s Thunderbox Room as a “Living Memorial” to those Gardeners at Heligan who fought and died in the Great War.