Officially the Mesrop Mashtots Institute of Ancient Manuscripts, the Matenadaran is one of the great manuscript collections in the world — more than 23,000 documents in Armenian, Greek, Syriac, Latin, Arabic, Persian, and a dozen other languages. The collection covers theology, philosophy, medicine, astronomy, and history from the 5th century onwards, including the world's largest body of medieval Armenian literature.
The display gallery shows a rotating selection of the most beautiful manuscripts: vivid illuminated gospels, miniature painted Bibles, and astonishingly small books made for travelling monks. The fortress-like building at the top of Mashtots Avenue is itself worth a look, faced in basalt and approached up a long flight of stairs lined with statues of Armenian thinkers.