Funadama Matsuri Festival at Nagatoro Gorge, Chichibu. Two Manto-sen (boats decorated with a lot of lighted lanterns) are set adrift on the river from 5 p.m. Toro-nagashi (floating of lighted lanterns) is held from 6:50 p.m., and a fireworks display is scheduled from 7:30 p.m. to 9 p.m. (about 3,600 fireworks). Access:The Chichibu Tetsudo Line to Nagatoro Station, and then walk 5 min.