What do you have to show for your summer vacation? A fattened bank account? A nice tan? For teen participants in Groundswell Community Mural Project's Summer Leadership Institute, the effects of their summer are written on the walls.Working with professional artists, 75 young adults (ages 14-21) have transformed New York's walls into six giant canvases -- bringing the histories, stories and hopes of their communities to life in vivid color. They have interviewed residents and studied their neighborhoods' histories. The result is six monumental works of art on underserved streets from Sunset Park to Harlem."Working on this mural has helped me appreciate that art has a role to play in serving my community," said Shaniqua Adams, a youth participant who helped to create "Weeksville Time Train," a project in collaboration with the Weeksville Heritage Center that brings to life the historic neighborhood's rich African American legacy.Other Brooklyn projects include a fatherhood-themed mural at P.S. 24, a bilingual school in Sunset Park for Latin American immigrants, and a multi-media campaign near Downtown Brooklyn to call attention to the neighborhood's traffic-related deaths.Groundswell is a Gowanus-based nonprofit dedicated to using art as a tool for social change. Founded by Amy Sananman in 1996, the organization develops partnerships with educational as well as community-based institutions to collaboratively create over 75 public art projects.According to Sananman, 65 of the 75 youth participants are from Brooklyn, and all 15 of this summer's professional artists are Brooklyn-based."I am so proud to see Brooklyn thriving with thoughtful, socially-relevant public art," Sananman told the Brooklyn Eagle. The fruits of this summer's labor will be celebrated with six public dedication ceremonies from Tuesday, August 28, through Saturday, October 6. Details of the Brooklyn-based ceremonies are below:"Not One More Death." Dedication Date: August 28, 6:00 p.m.In partnership with Transportation Alternatives and Visual Resistance, youth are creating a campaign to reclaim neighborhood streets in the wake of several traffic-related deaths near Downtown Brooklyn. Project Location: Butler Street and 3rd Ave., Gowanus."Beautiful Migration." Dedication Date: August 29, 4:30 p.m.Young women are creating a large-scale mosaic celebrating environmental activism and women's empowerment. Project Location: P.S. 503, 59th Street and 4th Ave., Sunset Park."Building Better Tomorrows." Dedication Date: August 30, 4:00 p.m.A team of young men interviewed fathers of students at P.S. 24, a bilingual school for Latin American immigrants, and is creating a mural that illustrates their journeys and desire for a better life. Project Location: P.S. 24, 427 38th St. at 4th Avenue, Sunset Park."Weeksville Time Train." Dedication Date: August 31, 5:30 p.m.Youth worked with seniors to create a mural at Hugh Gilroy Senior Center that brings to life Weeksville's rich African-American heritage in partnership with Weeksville Heritage Center. Project Location: Hugh Gilroy Senior Center, 447 Kingsborough 4th Walk, Weeksville."Art Builds Community, Community Creates Change." Dedication Date: October 6, 1:00 p.m.Young women are painting a large-scale mural exploring female empowerment, overcoming obstacles and the need for immigrant rights, gender equality and an end to all forms of discrimination. Project Location: M.S. 443/P.S. 295, 330 18th St. at 6th Avenue, Sunset Park.