Horto Waterfall Trail

The Instituto Nacional de Matemática Pura e Aplicada (IMPA; English: National Institute for Pure and Applied Mathematics) is widely considered to be the foremost research and educational institution of Brazil in the area of mathematics. It is located in the city of Rio de Janeiro, and was formerly known simply as Instituto de Matemática Pura e Aplicada, hence its official abbreviation.

Horto is a community of 621 families in the South Zone of Rio de Janeiro. It is not officially recognized as a neighborhood. It is located in Jardim Botânico, near Gávea, and Lagoa. The property is worth an estimated $3.29 billion.The community was first established in 1808 when King João VI invited the slaves and workers building the botanical garden to live on the property.