Tall, square, pointed stone needles, obelisks were usually placed in pairs at the entrance to a tomb (in the Old Kingdom) or a temple (from the New Kingdom onwards). Their connection to the sun is apparent from their similarity in form to the ancient benben-stone of Heliopolis, which itself may symbolise a ray of the sun. The sun temples at Abusir were built around huge obelisks contructed of numerous blocks of stone. However, late obelisks are usually monoliths. Many pharaonic obelisks were transported from Egypt and now grace squares in Rome, Istanbul, Paris, London and New York.