It is related to a liquid container, which may be in the shape of a bottle with an elongated section at its top in a first position and is convertible to a glass or goblet in a second position with the elongated section at the bottom. The liquid container may be a wine container, which can be a wine bottle in its first position and also be a wine glass in its second position. Conversion between the first and second positions can be achieved via a relatively simple and instant way, such as turning a container in one position upside down and placing the container in another position. Such conversion may not need additional process such as disassembling and/or reassembling the container.