Chandigarh – Governor's Palace

Le Corbusier – Governor’s Palace in Chandigarh, 1953

The Governor's Palace is a building in Chandigarh designed by Le Corbusier, with the help of Pierre Jeanneret, a Swiss architect and cousin of Corbusier, but was not built.
A model of the building was exhibited at the Le Corbusier Centre in Zurich, Switzerland. The planning and development of the city of Chandigarh is considered a unique experiment in modern independent India.

At the top of the roof is an observation platform with garden surfaces. A staircase leads to this elevated platform, the city on one side and the mountains on the other. 

Architect Alexander Gorlin published an interesting and comprehensive analysis of this architecture:
http://gorlinarchitects.com/essays/an-analysis-of-the-governors-palace-of-chandigarh/