The artist Kara Walker — whose monumental sphinx, “A Subtlety, or the Marvelous Sugar Baby,” wowed critics and clogged Instagram feeds in 2014 — will unveil a new public art project this fall as part of the contemporary art triennial Prospect New Orleans, the exhibition’s organizers announced.

“Prospect.4: The Lotus in Spite of the Swamp,” as this iteration of the triennial is called, will be open Nov. 18 through Feb. 25 in New Orleans, and will coincide with the city’s 300th birthday celebrations.

The triennial’s roster features 73 artists from the United States, Latin America and the Caribbean, as well as Africa, Europe and Asia. More than 30 of them will create works specifically for the exhibition, which is spread around 17 venues including institutions (the New Orleans Museum of Art) and public spaces (Crescent Park on the Mississippi River).