Two major United Nations buildings in Manhattan will be renovated in a $500 million project, helping the organization consolidate its office footprint in the city.

UNICEF, the United Nations agency for children, has its headquarters at another building, 3 U.N. Plaza. The city will transfer ownership of that building to UNICEF in 2026, according to the statement.

The U.N. has signed a lease for 425,190 square feet of space across 26 stories at 2 United Nations Plaza and two stories of ...