Plans for two new temporary pavilions for Chicago's Milennium Park, US, have been revealled to mark the 100th anniversary of Daniel Burnham's 1909 masterplan, which outlined the controlled growth of city.

Designed by London-based Zaha Hadid and Amsterdam-based UNStudio's Ben Van Berkel, the recyclable pavilions will be installed in the park this June and will be open to the public until October. The project was commissioned to celebrate Burnham's masterplan for Chicago, which led to a number of city park developments, by the Constituent Service Office of Alderman Reilly and chairs of the Burnham Plan Centennial Committee. The Hadid pavilion will serve as a screen for a video installation that tells the story of the city's transformation, including visions for the future by local architects, and the UNStudio pavilion is designed to invite visitors to walk around and through the space which is framed by Lake Michigan and Michigan Avenue on either side.

The pavilions will be built from locally-sourced steel and aluminum. UNStudio's pavilion will be dismantled and recycled, while Hadid structure will be relocated elsewhere in the city following the Centennial. The 24.5-acre park already features Frank Gehry-designed Jay Pritzker Pavilion; the Crown Fountain by Jaume Plensa and Anish Kapoor's Cloud Gate sculpture.