http://www.kwanumzen.com/

The Kwan Um School
The Kwan Um School of Zen is an international organization of more
than a hundred centers and groups founded by Zen Master Seung Sahn,
the first Korean Zen Master to live and teach in the West. The
School's purpose is to make this practice of Zen Buddhism available
to an ever-growing number of students throughout the world.
The heart of the Kwan Um School of Zen is the daily practice which
goes on in its Zen centers and groups. Students and visitors eat
together, work together, and meditate together -- gradually
attaining a clear compassionate mind which moment to moment is able
to help all beings.
We offer training in Zen meditation through meditation instruction,
daily morning and evening practice, public talks, teaching
interviews, sittings, retreats and workshops. Our programs are open
to anyone regardless of previous experience and are often offered
at no cost.
Our listing of Zen Centers and groups can help you locate the one
nearest you.