The Chihiro Art Museum Tokyo was set up to commemorate the life and artwork of renowned, prize-winning, illustrator Chihiro Iwasaki, 1918-1974. She experienced war first-hand, in Manchuria and Tokyo, and longed for peace, especially for children. The museum hopes to promote that message of peace alongside her artwork. For one day of the year, on the weekend closest to the anniversary of her birthday, Tokyo cheapos can avoid paying the 800 yen entrance fee.
For more information on the museum and Chihiro check out the link above. Collections from other artists are also exhibited. The museum is a seven minute walk from Kamiigusa station on the Seibu-Shinjuku line but can also be accessed from Shakujii-Koen station on the Seibu-Ikebukuro line – a 23 minute walk – and combined with a stroll around Shakujii Park.