The existing design of the North and South Blocks, which house several ministries, including those of home affairs, defence and finance, and the Prime Minister's Office, will not be changed even after a common Central Secretariat is built, they said. 

"If a plan to build a new Parliament building is finalised, the existing structure of the historic Parliament may be turned into a museum," a source said. 

"The government has no plans to change the design of the North and South Blocks. Once a common Central Secretariat is built, we will have several options including of turning the North and South Blocks into museums," he said. 

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