Warehouse City, a Gothic building with brick structure of six to seven stories, constitutes a long warehouse city block along both land and water roads. Behind the thick walls are "treasures" from all over the world. People can find not only coffee, tea, cocoa and tobacco, but also carpets and high-end electronic products. These items are not only stored here, but also cleaned by knowledgeable staff to make them more complete. There is the largest Oriental carpet warehouse in the warehouse city in the world. Warehouse City Museum, Customs Museum, Spice Museum and other museums here tell people about the tradition and Modernity of Warehouse City. Visitors to Hamburg Prison can experience a dark page in the history of Hamburg. UNESCO World Heritage Committee fully affirmed the important value of Hamburg Maritime Storage Complex and Office Building in the early 20th century. Hamburg also has its first world cultural heritage.