Praça dos Três Poderes, or Three Powers Plaza, occupies the eastern end of Brasília’s Monumental Axis. It was conceived as the capital’s civic centre, where the institutions of the executive, legislative and judicial branches face one another across a broad open esplanade. Brazil’s heritage agency, Iphan, describes the composition as a work by urban planner Lúcio Costa and architect Oscar Niemeyer: the Planalto Palace, National Congress and Supreme Federal Court form the plaza’s defining edges. This arrangement is not just a convenient cluster of official buildings; it turns the new capital’s political structure into a space that can be read on foot.
The plaza belongs to Brasília’s modernist urban ensemble, which Iphan identifies as protected heritage and a UNESCO World Heritage property. The wider recognition applies to the planned urban ensemble rather than making every individual building or sculpture a separate UNESCO site. From the open space, visitors see the long civic axis, the distinctive silhouettes of the Congress and the low horizontal lines of the Planalto Palace and Supreme Court. The scale can feel exposed under the central Brazilian sun, so a short walk is more comfortable with water, sun protection and time to pause rather than a rushed checklist of photo stops.