Viticulture was revived in the 1970s onwards, possibly helped by a rising local temperature due to global warming, making many parts of Hampshire, Sussex, Kent, Essex, Suffolk, Berkshire and Cambridgeshire dry and hot enough to grow grapes of high quality. The first English wines were influenced by the sweet German wines like Liebfraumilch and Hock that were popular in the 1970s and were blended white and red sweet wines, called "cream wine" (creams). The largest vineyard in England is Denbies Wine Estate in Surrey, which has under vines, and a visitors' centre that is open all year round.