Drum tower (Europe)
A Drum tower in Europe is a round tower that has a longer diameter length than height, resembling the shape of the musical instrument. Sometimes the term is used erroneously to describe typical round Norman defense towers or circular towers in general.
- Cyril M., Harris (2006). DICTIONARY OF ARCHITECTURE & CONSTRUCTION 4th Edition (PDF). New York: McGraw-Hill. p. 341. ISBN 0-07-145237-0. Archived from the original (PDF) on 2017-08-10. Retrieved 2017-06-16.