While pumpkin carving is a marvelous family activity for all to enjoy, architects bring the tradition to a whole new level. In New York on Friday night, the Center for Architecture hosted its first Pumpkitecture! pumpkin-carving contest as part of its monthlong Archtober celebration, bringing together 20 practices from the city—including AD100 firm Rockwell Group, Bjarke Ingels Group (BIG), and Studio Gang—that competed for the prized Pritzker Pumpkin. Each team had just over an hour to create an architectural masterpiece, and once the clock started, power tools whirred and pumpkin guts flew. There were quite a few jack-o'-lantern interpretations, from a realistic depiction of Frank Lloyd Wright's Solomon R. Guggenheim Museum (Studios Architecture) to a pumpkin turned into a vessel for whiskey-spiked cider (MVVA) to a "Pumpkin Spice Terrazzo" mosaic (SO-IL). After the build, each team offered a brief defense of its project to a jury, which eventually awarded the Pritzker Pumpkin to SITU Studio for its pumpkin-shaped void cast in concrete. Here, we take a look at some of the projects from the festive evening. cfa.aianrg

SITU Studio won the Pritzker Pumpkin for their concrete pumpkin void.

SOFTlab designed a pumpkin likeness of the firm's principal, Mike Szivos, vomiting a parametric pattern.

The Architecture Research Office donned hazmat suits to create their suspended pumpkin cross-section.

SO-IL designed a "Pumpkin Spice Terrazzo."

BIG was inspired by a European courtyard.

WORKac illuminated pumpkin innards (and scored the Lucifer's Lantern prize).

Winner of the People's Pumpkin was Rogers Partners Architects + Urban Designers, who created pumpkin half houses in homage to 2016 Pritzker Prize winner Alejandro Aravena.

Rockwell Group's theme was "Where Evil Sleeps." Shown (from left) are the Death Star, Trump Tower, and the Bates Motel.