This building was constructed before 1894 and was originally the residence of Dona Carolina Cunha. Hong Kong businessman Sir Robert Ho Tung purchased it in 1918, using it as his retreat until his relocation to Macao during the Second World War when Hong Kong fell into the hands of the Japanese in 1941. He passed away in 1955 and in accordance with his will, the building was presented to the Macao Government for conversion into a public library.

The library allows readers to eat and talk in special areas; readers can also listen to music and watch movies in the AV room.

In celebration of the 140th Anniversary of the birth of Sun Yat-sen, Sir Robert Ho Tung Library is hosting an Exhibition of Publications about Dr. Sun Yatsen, featuring valuable publications and bibliographies of the Father of China.