At 415 North College Avenue in Tahlequah, OK, you will find Franklin Castle. It looks exactly like a castle you would find in England during the middle ages. Information can be found here.
During the Great Depression
This castle was actually built in 1931 during the Great Depression. Marion E. Franklin built the home on a bluff above Town Branch Creek, overlooking Northeastern State University. Franklin was the head of the industrial arts department at Northeastern, so he was uniquely qualified to supervise the building of this castle. See here for information about Historic Rosamund House in Tahlequah, OK.
Franklin let his students in his advanced architectural glasses work on the drawing for the castle over a four-year period. The final design had nearly 3000 square feet of living area. Each corner of the building had a round tower.
Inside you will find arched doorways and round rooms. In a time when all garages were detached, Franklin had his garage in the basement.
Since Franklin was doing the construction after the stock market crashed in 1929, materials were cheaper, and labour was easy to find, so he was able to cut costs significantly.
He put the castle on a reinforced concrete foundation. Walls were made of terra cotta block, plastered on the inside. This resulted in walls that were about 18 inches thick.