To cater to the expanding exhibitions, the Städel Museum in Frankfurt, Germany, has expanded its gallery space underground. Unlike other underground spaces that are usually beneath a concrete floor or building, this 3000-square-meter room lies directly under a lawn.
The garden includes 195 skylights dotted across the grass field, ranging from 1.5 to 2.5 meters in diameter. There is also a sculpted hill protruding from the ground, also decorated with the skylights.
The underground exhibit halls are up to eight meters tall, and are brightly lit throughout with natural lighting. The structure uses the earth’s mass as an effective insulator as well as a ventilation system to store the artworks at a comfortable and safe temperature. Browse through more photos of the museum below.