The north and south blocks of the secretariats comprises of the major offices of the government of India.
The main offices of the north block are:
- Ministry of Finance
- Ministry of home affairs
The south block offices comprises of:
- Ministry of Defense
- Ministry of External Affairs
- The Prime Minister's office
The secretariat buildings of the north and south block are made of rose pink and pale yellow sandstone. The structure of the buildings gives a hint of the Mughal and Rajputana style. Both buildings are ornamented with stone screens which are known as ‘ jali'. The buildings are provided with slants along the roof that shelters the artwork of the building from heat and monsoonal showers. The government of Australia, Canada, New Zealand and South Africa donated the four Dominion columns that stand within the Great court. The centre of the court is adorned by the Jaipur Column of red sandstone with structures of a white egg, bronze lotus and six-pointed glass star of India.