Rainforest Trust, formerly World Land Trust-US and World Parks Endowment is a US-based nonprofit environmental organization established December 8, 1988 in New York. In 2006, then World Parks Endowment affiliated itself with World Land Trust, a UK-based nonprofit environmental organization, and became World Land Trust-US, as both organizations were dedicated to minimizing their costs in order to allow donated funds to flow to real habitat conservation projects on the ground. On September 16th, 2013, as part of celebrating the organization's 25th anniversary, the World Land Trust-US changed its name to Rainforest Trust.