The chapel of Notre Dame du Haut (Ronchamp Chapel) by Le Corbusier's  is one of the 20th century's most important buildings.
The main structure consists of thick masonry walls, which are curved to improve stability and provide structural support.

The monumental curved concrete roof is a shell structure supported by columns hidden in the walls. A gap underneath allows a sliver of light to filter into the interior.

Although its external appearance suggests a complicated layout, the interior is fairly simple in plan.

Architect: Le Corbusier
Location: Ronchamp, Haute-Saone, France
Project Year: 1954