The Universe Cascade - it has 25 landings that mark the important shifts in cosmic history. Starting at the top, in the present day, and descending down, visitors are moving through 13 billion years of cosmic evolution. The steps finally disappear into the dark water below, which represents the mystery of the origin of the universe.

Les Boules Roses installation by landscape architect Claude Cormier | Featuring 200,000 resin balls in three sizes and five shades of pink suspended over Sainte-Catherine Street East in Montréal (Québec), Canada

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