Gostiny Dvor
Mattarnovi built "Mytny (Gostinny) Dvor" on the intersection of Nevsky Prospect and Moyka River (1716–1720). The building was destroyed by fire in 1736 and a new Gostiny Dvor was built on a different spot. Mattarnovi was the originator of the "standard houses" built on Petrogradsky Island and the first version of Saint Isaac's Cathedral, built from 1717—1723.