Abstract Since 1961 the Antarctic Treaty has been acknowledged internationally as the legitimate forum through which decision-making for the region takes place. Membership growth and the establishment of new conventions are strong indicators of how this international regime has overcome challenges to its functioning, while preserving peace maintenance, scientific cooperation and environmental protection as the main pillars of Antarctic governance. For this special volume of Annals of the Brazilian Academy of Science, this work provides an overview of the Antarctic Treaty Consultative Meetings’ operation, highlighting how they established specific diplomatic practices: the progressive introduction of issues, the avoidance of contentious issues, and “watered-down”, ambiguous text, all of which have enabled parties to circumvent conflict and reach consensual agreement. Based on analysis of the Antarctic Treaty Database, this work shows the main practices developed through the Antarctic Treaty and concludes that the adaptability of Treaty Parties to manage challenges over the last 60 years will unquestionably continue to underpin the regime.