designed gardens. His first garden design was completed in 1933. In 1937, Burle Marx gained international recognition and admiration for this abstract design of a roof garden for the Ministry of Education building. The design highlighted elements of tension and drama. In 1949 he acquired the Sítio de Santo Antonio da Bica, a 365,000m² estate in the Barra de Guaratiba neighborhood on the outskirts of Rio de Janeiro. Burle Marx began taking expeditions into the Brazilian rain forest with botanists, landscape architects, architects and other researchers to gather plant specimens. He learned to practice studying plants in situ from the botanist Henrique Lahmeyer de Mello Barreto and established his garden, nursery and tropical plant collection at Guaratiba. This property was donated to the Brazilian government in 1985 and became a national monument. Now called Sítio Roberto Burle Marx, under the direction of IPHAN, it houses over 3,500 species of plants. The house was rebuilt in a valley on the site of a garden house belonging to the original plantation estate. In 2021, Sítio Roberto Burle Marx was inscribed on the UNESCO World Heritage List because of its unique Modernist design and its importance for environmental and cultural preservation. Roberto Burle Marx founded a landscape studio in 1955 and in the same year he founded a landscape company, called Burle Marx & Cia. Ltda. He opened an office in Caracas, Venezuela in 1956 and started working with architects Jose Tabacow and Haruyoshi Ono in 1968. Marx worked on commissions thorough out Brazil, Argentina, in Chile and many other South American countries, France, South Africa, Washington D.C. and Los Angeles. Additionally his artwork can be found displayed throughout the city of Rio de Janeiro "it is an open-air museum of works displaying his unmistakable style, one wholly his own" (Montero 2001 p. 29). Roberto Burle Marx's 62-year career ended when he died June 4, 1994 two months before his 85th birthday. He spent time in the Brazilian forests where he was able to study and explore. Burle Marx was one of the first Brazilians to speak out against deforestation. This enabled him to add significantly to the botanical sciences, by discovering new rocks and plants for example. At least 50 plants bear his name. Marx was also involved in efforts to protect and conserve the rain forest from the destructive commercial activities of deforestation for bananas and other crops and clear cutting