Guardacostas Building, Government building in Puerto Madero, Argentina

The Guardacostas Building is a ten-story structure in Puerto Madero with a curved façade and large windows overlooking the waterfront. Bronze doors at the entrance are decorated with maritime reliefs, emphasizing the building's connection to the sea.

Decree 9060 of 27 April 1945 awarded the construction works, which began that June under de facto president Edelmiro Farrell and ended in late 1949. The finished building was assigned to the Secretaría de Marina, which moved in that November, and the Prefectura only occupied it formally on 29 October 1979, after the Ministry of Culture and Education had used it. Naval aviation squadrons bombed and strafed it during the 16 June 1955 Plaza de Mayo bombing.

This structure houses the National Coast Guard and represents how maritime protection evolved in Argentina over the decades. The building's role in managing waterfront activities shows how important shipping and coastal defense remain to the city.

The building sits between Eduardo Madero and Alicia Moreau de Justo avenues in an easily accessible location near the harbor. The surrounding area has good walking paths and is part of the modern Puerto Madero neighborhood with restaurants and public spaces.

The building's lower levels were designed to hold holding cells, an arms room and the heating and cooling machine rooms, alongside staff quarters. Eleven public lifts and two private ones for senior ranks connect the two basement levels, ground floor and nine upper floors.