Throughout its activity for more than 30 years, Mário Sequeira has been promoting the work of several recognized artists in collaboration with numerous institutions, both public and private.JULIAN OPIE, VALENCIA, 2021FUNDACION HORTENSIA HERRERO ANTONY GORMLEY I PROP I 2018CULTURAL CENTRE I WORLD TRADE CENTER I LISBON UGO RONDINONE I YELLOW WHITE MONK I GREEN BLACK MONK I PAINTED BRONZE I 2020CULTURAL CENTER I WORLD TRADE CENTER I LISBON JULIAN OPIE I WALKING IN LISBON I LED I 2022CULTURAL CENTER I WORLD TRADE CENTER I LISBON RICHARD LONG I FIVE PATHS I GRANITE I 2004ES BALUARD I PALMA DE MALLORCA JULIAN OPIE I TERESA I LED I 2018ALTICE FÓRUM I BRAGA