On February 18, 2011 (her 78th birthday), Ono took out a full-page advert in the UK free newspaper "Metro" for "Imagine Peace 2011". It took the form of an open letter, inviting people to think of, and wish for, peace. With son Sean, she held a benefit concert to aid in the relief efforts for earthquake and tsunami-ravaged Japan on March 27 in New York City. The effort raised a total of $33,000. In July 2011, she visited Japan to support earthquake and tsunami victims and tourism to the country. During her visit, Ono gave a lecture and performance entitled "The Road of Hope" at Tokyo's Mori Art Museum, during which she painted a large calligraphy piece entitled "Dream" to help raise funds for construction of the Rainbow House, an institution for the orphans of the Great East Japan earthquake. She also collected the 8th Hiroshima Art Prize for her contributions to art and for peace, that she was awarded the year prior.