Thanks to careful protection and good management, several of the gardens have been included in the UNESCO World Heritage List in 1997, including Zhuozhen Garden(Humble Administrator's Garden), Wangshi Garden(Master-of-Nets Garden), Liuyuan Garden(Lingering Garden), Huanxiu Villa(Villa with Embraced Beauty) , Canglangting Garden(Surging Waves Pavilion), Shizilin Garden(Lion Forest Garden), Ouyuan Garden (Double Courtyard), Yipu Garden (Art Garden) and Tuisi Garden(Retreat and Reflection Garden). These gardens demonstrate the typical features of Suzhou's classical gardens in layout, structure, design, style, use of color, decoration and furniture.