The Rio Tinto Alcan Planetarium located in Montreal, Canada was designed by the Cardin Ramirez Julien + Aedifica architectural practice after winning the international design competition with a scheme which tries to bring out the connection to nature in the experience of the visitors.
The lights in the city make stargazing difficult so the designers wanted to implement the qualities of the outdoors into the design of the building with two huge cones oriented toward the sky in a manner similar to that of telescopes.
The large cones also make the project easily recognizable and thus the institution became a landmark in the area along with the Olympic stadium or the biodome. There are two theaters in the Planetarium, each of them in one of the cones and they have different functions and presentation methods.
The Chaos Theater is a multimedia environment where there aren’t any fixed seats, while the other is called the Milky Way and it presents astronomical exhibits.