Historic Potsdamer Platz in the center of Berlin has seen its share of turbulence. Razed during World War II and bisected by the Berlin Wall (an unobtrusive brick line still runs through the center of the square marking where the wall once stood), it once was a cement-covered no-man’s-land.

Within the last two decades, however, the square has been reborn, and it has a green story to tell.

Meandering through the square, an “Urban Waterscape” of pools, canals, and gentle cascades create “an oasis of calm and beauty,” according to design firm, Atelier Dreiseitl. Naturalized landscapes (“purification biotopes”) surround and filter the water that passes through it.

Besides the aesthetic benefits, the Urban Waterscape is a sophisticated rainwater management system. Over half of the buildings surrounding the enormous square have green roofs. Rainwater from the buildings supplies flushing toilets and fire systems. The remaining rainwater fills the pools and irrigates the landscapes.

Almost subliminally you are drawn to the vista of natural grasses, ducks, fish, and even a crane peacefully co-existing between a highway and the bustling city center. Add the environmental story, and Potsdamer Platz becomes an impressive part of Berlin’s renaissance.