The largest mural by one artist measures 1,678.43 m² (18,066.4 ft²) and was created by Ernesto
Espiridion Rios Rocha (Mexico). It was completed and measured in Mazatlan, Mexico, on 6 October
2009.

The mural depicts the historical and economical development of Mazatlan, and the Mexican state of
Sinaloa as well as the rich marine fauna of the Sea of Cortez. The mural is located on the north wall of the Convention and Exhibition Centre of Mazatlan.

Referencias: http://www.guinnessworldrecords.com/records-5000/largest-mural-by-one-artist/