Gandantegchenling Monastery, also known as the Gandan Monastery, is a Tibetan-style Buddhist monastery located in the heart of Ulaanbaatar, the capital city of Mongolia. The monastery was founded in 1838 and is one of the most important religious sites in Mongolia.

Gandantegchenling Monastery is home to several important Buddhist artifacts, including a 26-meter-high statue of Avalokiteshvara, the Buddha of Compassion. The monastery also houses numerous murals and other religious artwork, as well as a collection of Buddhist texts and scriptures.

The monastery has played an important role in Mongolian history and culture, and has survived multiple attempts to destroy it, including during the communist regime in the 1930s. Today, it continues to be an active center of Buddhist practice and education, and is open to visitors who wish to learn more about Mongolian Buddhism and culture.