Venture across the border to Montréal this summer, and you'll likely notice an anachronistic 81-foot pyramid on a pier of the city's Old Port. Step inside and you'll discover a 360-degree theater, the site of a new immersive, multimedia show called "Through the Echoes." The project — dubbed PY1, which stands for Pyramid 1 — is the brainchild of Cirque du Soleil cofounder Guy Laliberté, in collaboration with his company, Lune Rouge Entertainment. The hour-long show uses video footage, music, lights, lasers, special effects and the voice of late British philosopher Alan Watts to take spectators on a virtual journey through time and space — from the Big Bang to the future — and to provoke weighty questions like "What does it mean to be human?" Appropriate for ages 8 and up, there are no assigned seats; visitors are encouraged to lie down in the space. For the 18+ set, PY1 also offers late-night shows Friday through Sunday, featuring seven different "worlds" and a clubby atmosphere. Catch the show until the end of September, when it heads to the warmer climes of Miami.