Hammer 90 (Double production speed with Creative)
Requirements Writing

The Library is replaced by the following unique building:


Libraries boost your cities' research and provide culture. They are required to build Universities, the Great Library wonder, and the National Epic and Heroic Epic national wonders.

Civilopedia EntryEdit

The development of writing meant that the accumulated knowledge of a society could be written down and stored rather than memorized and passed along by word of mouth. The accumulated written material was stored in a library. The libraries of the ancient world, especially those at Alexandria and Pergamum, became leading centers of science and scholarship. The librarians actively collected the books of the world, accelerating the spread of knowledge.