No. 51. Firm: Mathew Arthur. Idea: After retrofitting a 1987 Dodge Ram, designer Mathew Athur is living in it for 365 days as part of a project called Van x Year, examining how to create comfort in a small space. Photo courtesy of Mathew Arthur.
No. 64. Firm: John Baldessari. Site: Los Angeles, CA. Idea: A dozen modes of transport have been painted school-bus yellow and emblazoned with "Learn to Dream" on one side and "Aprende a Soñar" on the other, part of a public-art exhibition and fund-raising campaign to support LA's public schools. Photo by Joshua White.
No. 92. Firm: Benny Jepsen and Kristoffer Tejlgaard. Site: Bornholm, Denmark. Idea: A lattice of local Douglas fir formed what appeared to be an exploded geodesic dome, a temporary pavilion called People's Meeting Dome and built for Denmark’s department of public housing. Photo courtesy of the artists.
No. 91. Firm: Visiondivision. Site: Indianapolis, IN. Idea: A single poplar yielded virtually everything needed to construct the Chop Stick concession stand at the Indianapolis Museum of Art’s 100 Acres: The Virginia B. Fairbanks Art & Nature Park. Photo by Eric Lubrick.
No. 94. Firm: Salto. Site: Nikola-Lenivets, Russia. Idea: Fast Track's steel frame and springs and a polypropylene bounce mat are entirely standard, but the 170-foot length of this trampoline path makes it anything but ordinary. Photo by Karli Luik.
No. 66. Firm: Kevin Cooley. Site: Brooklyn, NY. Idea: Brooklyn, New York, temporarily went West when this video projection—titled Skyward—on the Boiler gallery's ceiling, gave viewers the sense of riding in a convertible through Los Angeles. Photo courtesy of the Artist and the Boiler/Pierogi.
No. 93. Firm: Ann Hamilton. Site: New York, NY. Idea: As swings dangled from the wrought-iron trusses of the Park Avenue Armory, its drill hall morphed into a playground called "The Event of a Thread." Photo by James Ewing.
No. 100. Firm: Situ Studio. Site: New York, NY. Idea: Situ Studio disassembled the boardwalks destroyed by superstore Sandy and transformed them into Heartwalk, a platform that won the annual Times Square Valentine Heart Design competition.