Detail
Type Burg - Heimburg is a Burg.
Kr Sankt Goar - The Kreis for Heimburg is Sankt Goar. A Kreis is a government district (similar to a U.S. county).
See Niederheimbach - A See notation means the entry is dependent on another entry. In this case, Heimburg is dependent on Niederheimbach, which should be consulted for additional information.