1. Oscar Niemeyer International Cultural Center

This was his 1st project in Spain, and it consists of a concrete hemisphere with a height of 20 meters and various floors below ground level, where the exhibition space is located. This large structure is joined through a cantilever with sinuous shapes, to a glass building that houses an auditorium and cinema.

The complex is completed with a steel and concrete tower, finished with circular glass construction in which the administrative services, cafeteria and restaurant are located.

2.Niemeyer's Contemporary Art Museum in Niteroi

•Designed in collaboration with the structural engineer Bruno Contarini and completed in 1996, the Niterói Contemporary Art Museum resembles a flying saucer hovering above Rio de Janeiro’s Guanabara Bay.
•In addition to exhibition space, the structure includes a viewing gallery, whose windows offer panoramic views of the water below and Sugarloaf Mountain in the distance.

3 .Metropolitan Cathedral, Brasilia

•The swooping columns of the Cathedral of Brasília form a coronal shape called a hyperboloid structure.
•The Roman Catholic cathedral, most of which is set underground, is surrounded by a reflecting pool, under which worshipers pass to enter the building.
•It was completed in 1970 and is complemented by a similarly shaped bell tower and bronze sculptures of the four Evangelists by Dante Croce.

4. alvorada palace brasília