At Monticello, Thomas Jefferson had drawn and designed many structures from the house to the fences, roofs, and many special structures. In the house he had a special book holder made that rotated and held at least 4 books at once to read. He had a special clock made that was near his bed that he designed. Outside, Jefferson had this spherical sundial/clock. It was very unique and I really liked the base with corn carved into the stone.