Antonievo-Siysky Monastery, Orthodox monastery in Kholmogorsky District, Russia

Antonievo-Siysky Monastery is an Orthodox monastery complex built on a peninsula surrounded by Lake Mikhailovskoye in the Kholmogorsky District of Russia. The grounds hold several medieval stone buildings arranged around the Trinity Cathedral, all enclosed within fortification walls.

The monastery was founded in 1520 by a monk known as Anthony, and it grew into one of the more notable religious centers in northern Russia over the following decades. In the early 1600s, the future tsar Mikhail Romanov was briefly exiled here before he rose to power.

For centuries, monks here copied religious texts and built up a sizeable library of manuscripts. Walking through the churches and corridors today still gives a sense of the quiet, disciplined daily life that shaped this place.

The peninsula setting means visitors can walk around the outside of the complex and take in views of the lake from different angles. Because this is an active monastery, it is worth checking in advance which parts of the grounds are open to visitors.

The Trinity Cathedral combines design features from both the Novgorod and Moscow building schools, which was unusual for a remote monastery in the north at that time. This suggests that craftsmen from distant parts of Russia were involved in shaping the complex.