Inside the Montreal Botanical Garden is a world straight out of Avatar: massive, "living" creatures tower overhead, and vibrant colors fill the landscape. The garden is currently hosting a gallery of giant sculptures built from dirt and plants — all still breathing — that were crafted by 250 horticultural artists invited to the grounds from across the globe. The event is now in its fifth year, and around 50 different works are currently spread across the garden. You can watch some of the construction process in the video below, and view photos of a number of the sculptures over at Designboom.