I have read in the Lonely Planet's
Tibet guidebook that in Drepung Gomang, there is a single protector chapel on the upper floor and women are not allowed into the chapel.
It is said that in some Tibetan monasteries, women are not allowed to enter the chapel out of fear that spirits may be offended. I think this is "old Tibetan thinking" of women inferiority, or for the sake of keeping the monastery "clean" of accusation, I am not sure. Some monasteries forbid women altogether, for example Rabgya Monastery in Golog.
A few sites/ blogs online also mentioned the same thing, but no reasons given:
- Gomang College in Drepung
Gomang is the second largest of Drepung's colleges and follows the same layout as Loseling. The main hall has a whole row of images, including Jampa, Tsepame and the seventh Dalai Lama. Again, there are three deities of lonevity, but more important is the central chapel, chock-a-block with images. As at Loseling, there is a single protector chapel on the upper floor. Women are not allowed into this chapel.
Source: http://www.chinayak.com/travelguide091013/f351028.asp- 10. Do Steer Clear of Protector Deity Chapels if You Are a Woman
Many Tibetan monasteries have a small temple room devoted to a protector deity, and women are not allowed in these rooms
Source: http://evdecleyre.wordpress.com/2010/12/09/when-visiting-a-tibetan-monastery/Anyway, in Medieval Rome, women are not allowed to visit certain chapels in the basicilicas of St John Latheran and St Peter.
Mount Athos (Hagion Oros), or "Holy Mountain", is a UNESCO World Heritage Site. There are 20 Orthodox monasteries there and they stand on the eastern peninsula of Halkidiki. Women are still not allowed to enter Mount Athos.