Píer Mauá, pier in Rio de Janeiro

Pier Mauá is a pier extending into the bay in Rio de Janeiro that accommodates various vessels alongside modern and historic structures. The site features restaurants, cafes, cultural institutions including a museum and aquarium, and hosts numerous events throughout the year.

Construction of the pier began in 1948 and was completed in 1953. It was meant to receive ocean liners bringing foreign tourists for the 1950 FIFA World Cup, but that never happened and the space stayed without a defined use for decades. Since December 2015 it has housed the Museu do Amanhã, designed by Santiago Calatrava.

The pier is officially named Píer Oscar Weinschenck, after the engineer who led the 1940s expansion of Rio's port and had been mayor of Petrópolis. Since December 2015 the site has housed the Museu do Amanhã, designed by Santiago Calatrava, which visitors reach along the Orla Conde waterfront promenade bordering Guanabara Bay.

The pier lies in Centro, within the Zona Central, and forms part of the Orla Conde promenade along Guanabara Bay. Its roughly 45,000 m² open area is reached on foot from the surrounding streets; the Museum of Tomorrow, designed by Santiago Calatrava, occupies part of the site and opened there in December 2015.

The pier has hosted significant innovative events including Rio Innovation Week, where people from various countries present new ideas and projects. These gatherings demonstrate how the historic port site has transformed into a modern hub for creativity and exchange.