For a city that’s below sea level and covered in water, getting more green space involves looking toward the ocean.
When a city is below sea level, maybe it makes sense that a new city forest should float. In the Dutch city of Rotterdam, some neighborhoods aren’t just below sea level—they’re as much as 20 feet below, and over a third of the city surface is already covered in water. In March, a group of artists there will start to plant trees in the harbor instead of on land.
