Espace pour la vie and Mayor Valérie Plante announced Thursday that Montreal's Biosphere would reopen to the public as of Friday, August 13.
The structure, which houses an environment museum, was built as the American Pavilion for Expo 67.
In a Facebook post, the mayor announced that to mark the occasion, admission to the museum would be free all weekend.
Earlier in the year, the Governments of Canada and Quebec announced that control of the museum would be transferred to the City of Montreal and that it would become Espace pour la vie's fifth site, joining the Botanical Garden, Biodôme, Rio Tinto Alcan Planetarium and the Insectarium.
Shauit, Scott Sinquah, the Buffalo Hat Singers, Moe Clark, Geronimo Inutiq, Corey Diabo and Jeremy Dutcher will all be performing.
The event is set to take place at Cabot Square in downtown Montreal, which has been a gathering place for Indigenous people for several decades and is home to the Roundhouse Café, one of Montreal's only Indigenous cafés.
Spectators will have to sit alone and remain seated at all times, and mask-wearing is mandatory. No re-entries are permitted after you've entered the concert site.
The concert is free, but reservations are required through Eventbrite or at the reservation tent on-site. The event will also be streamed live on Facebook.
National Indigenous Peoples Day Concert
Price: Free, but reservation is required
When: June 21, 3-7 p.m.
Address: Cabot Square; 2322, rue Sainte-Catherine O., Montreal, QC (corner of Rue Lambert-Closse and Rue Sainte-Catherine O.)
The concert "features exciting arrangements of video game music for a chamber ensemble of 10 world-class musicians, performing music from series and titles such as Halo, Super Mario 64, The Legend of Zelda, Sonic, Assassin's Creed, and many others."