The word Yamaboko refers to the two types of floats used in the procession: the 23 yama and 10 hoko. One of the main reasons the Gion Matsuri is so impressive is the enormity of the hoko, which are up to 25 meters tall, weigh up to 12 tons, and are pulled on wheels as big as people. Both yama and hoko are elaborately decorated and represent unique themes. The procession on July 17 features 23 yama and hoko, including most of the particularly impressive hoko, while the procession on July 24 features the remaining ten yama and hoko.