Latin American modernism is significant as a uniquely elegant adaptation and interpretation of the International Style. With the support and patronage of governmental entities in many countries, Latin American modernism literally adapted a more European style modernism that could be acclimatized to tropical locales. The result is an impressive and eclectic architectural and landscape portfolio of the period from the 1940s through the 1970s that reflects the political and social zeitgeist of the region. This theme will focus on how modernism was adapted to a variety of environments to survive over time in the Americas. This theme will also discuss how modernism in the Americas was shaped by unique fabrication methods and technologies that responded and adapted to specific environments. Sessions will focus on challenges of conservation of materiality, retention of original technologies, craftsmanship and changing use over time. What are the vulnerabilities in the long term protection of modern heritage? How do we balance retention of material authenticity while sustaining these places in the future?