Admission is technically free, though there is a donation box on-site for upkeep. Location: 3901 Minnow Rd, Rex, GA 30273. 2. Ganna Walska Lotusland (Montecito, California)
Because it is in a residential area, advance tour reservations are required . Lotus Secret Garden
37-acre estate & botanical garden with 3,000+ plants, including rare cycads, cacti & euphorbias. Admission is technically free, though there is a
Rare cycads, cacti, and an "abalone shell" pool. Admission is technically free
3. The Secret Garden (Huwon) at Changdeokgung Palace (Seoul, Korea)