As you know, there are two options to dispose of the dead body; burying and cremation. Buddists adopted cremation in the early days. Cremated remains can be kept in a container called an urn, which in turn can be buried on cemetery plot or placed in a depot called charnel house. (Wikipedia: Cremation) There are some cemeteries and charnel houses on the outskirts of Seoul.

I guess there's no specific place for buddhists to get buried in Korea.