Travelers are voting Vivekananda Memorial, Gandhi Memorial and Tiruppur Kumaran Memorial Statue as the best of 47 key buildings in Tamil Nadu. Also popular are The Govt. Museum, National Art Gallery & Connemara Library and Guindy - Raj Bhawan in Chennai and Thiruvarur world Heritage Monument in Thanjavur. Want more? Check out our map of key buildings in Tamil Nadu or these 25 key buildings in Chennai.