Giboshi
Gibōshi is a type of ornamental finial used on Japanese railings. Gibōshi bridge ornaments resemble an onion; the ends are bulbous and typically come to a point. It is believed that the shape of gibōshi was from hōju which is used to decorate roofs. They are often found on bridges in Japanese gardens, temples and shinto shrines.
Gibōshi come in two styles; normal style and Kamakura style.