elected mayor Michael R. Bloomberg. The Gates was open to the public from February 12–27, 2005. A total of 7,503 gates made of saffron-colored fabric were placed on paths in Central Park. They were high and had a combined length of . The mayor presented them with the Doris C. Freedman Award for public art. The project cost an estimated US$21 million, which the artists planned to recoup by selling project documentation. Big Air Package Christo filled the Gasometer Oberhausen from March 16 until December 30, 2013 with the installation Big Air Package. After The Wall (1999) as the final installation of the Emscher Park International Building Exhibition, Big Air Package was his second work of art in the Gasometer. The "Big Air Package – Project for Gasometer Oberhausen, Germany" was conceived by Christo in 2010 (for the first time without his wife Jeanne-Claude). The sculpture was set up in the interior of the industrial monument and was made of of translucent fabric and of rope. In the inflated state, the envelope, with a weight of , reached a height of more than , a diameter of and a volume of . The monumental work of art was, temporarily, the largest self-supporting sculpture in the world. In the accessible interior of Big Air Package, the artist generated a unique experience of space, proportions, and light. X-TO+J-C: Christo and Jeanne-Claude Featuring Works from the Bequest of David C. Copley In 2014, the Museum of Contemporary Art San Diego presented the exhibit X-TO + J-C: Christo and Jeanne-Claude Featuring Works from the Bequest of David C. Copley, one of the museum’s patrons and trustees who also had the largest collection of Christo and Jeanne-Claude’s work in the United States. X-TO + J-C featured more than fifty works by Christo and Jeanne-Claude, including pieces such as Christo’s evocative Package (1960), alongside drawings related to his early concealed objects: chairs, road signs, and other commonplace items. Christo himself gave a lecture in which he discussed two works that were in progress: Over the River, Project for the Arkansas River, Colorado, and The Mastaba, Project for the United Arab Emirates. The Floating Piers The Floating Piers were a series of walkways installed at Lake Iseo near Brescia, Italy. From June 18 to July 3, 2016, visitors were able to walk just above the surface of the water from the village of Sulzano on the mainland