NEW DELHI: Spiritual leader of the Ismaili community, Prince Karim Aga Khan arrived here on Tuesday and will discuss with Indian leaders the future cooperation in restoration of heritage sites. The Aga Khan's foundation is engaged in promotion of education, rural development, health care and preservation of heritage sites in India. He unveiled late on Tuesday a $650,000 project for restoration of the gardens, water channels and fountains at Mughal Emperor Humayun's Tomb, which contains more than 100 Mogul graves. It is one of UNESCO's 23 World Heritage Sites in India. Funds were scarce with cash-strapped Indian government for maintaining more than 3,000 monuments in the country. On the inauguration of the three-year project on Tuesday, three kilometres of water channels were operated.