Karma Triyana Kharmachakra (KTD) in Woodstock, NY is the North American seat of HIs Holiness the 17th Gyalwang Karmapa, Ogyen Trinley Dorje. This is the the primary organization of which Athens KTC is an affiliate. Their website is full of great information about the Kagyu lineage and the Karmapa as well as informatin about visiting KTD and special teachings and events that take place at KTD.
Many of these links will take you to other websites outside of the Athens KTC site. Enjoy!