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Photo: Christopher J. Fynn, CC BY-SA 3.0 via Wikimedia Commons
It was built in the 17th century by Tenzin Drukdra the second Druk Desi over the site of a meditation place established by Drubthob Terkungpa in the 13th century.
Gasa Dzong or Gasa Tashi Thongmön Dzong (མགར་ས་བཀྲིས་མཐོང་སྨོན་རྫོང་) near Gasa is the administrative center of Gasa Dzongkhag (district) in the northwestern region of Bhutan. The dzong was built in the 17th century by Tenzin Drukdra the second Druk Desi over the site of a meditation place established by Drubthob Terkungpa in the 13th century. The Dzong was constructed as a bulwark against attacks from the north and named Tashi Tongmön Dzong. It was later expanded by the fourth Desi, Gyalse Tenzin Rabgye. Inside the Guardian's Temple (Goenkhang) he placed ritual object and performed the consecration ceremony.
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It is an important Drukpa Kagyu monastery and administrative center situated at an altitude of 4150 metres in Lingzhi, Thimphu District, Bhutan. Built in 1668 by the third Desi of Bhutan, Chögyal Minjur Tenpa (r. 1667-1680) to commemorate victory over a Tibetan invasion and named Yügyal Dzong.