Here is how I define 'gymnasium':
NOUN
1) an ancient Greek educational center with various areas for physical and intellectual development, especially areas for physical exercises in the nude
2) a building with various areas for the performance of physical exercises housing apparatus for strength training and aerobics as well as locker rooms, shower rooms, staff offices, etc.
3) an auditorium for physical exercises and sports that is usually part of the campus of an educational institution
4) in Germany and other European countries, a school that prepares students for university
gymnasium's
Gymnasium
A gymnasium is to do gymnastics and be safe doing it
The possessive form for the noun gymnasium is gymnasium's.Example: The gymnasium's floor was refinished over the summer.
The gymnasium.
The German word for gymnasium is Turnhalle.
My physical education class in in the gymnasium.
Gymnasium am Ostring was created in 1860.
Gymnasium am Ostring ended in 2010.
Vossius Gymnasium was created in 1926.
Gymnasium Eppendorf was created in 1904.
Valjevo Gymnasium was created in 1870.