The Porta Ferrea was the most important entrance to the old medieval fortress of Coimbra, where the University was installed in 1544. The current gate was designed by Alfonso Tavares in 1633, adopting university symbols. Its outer façade is crowned with Wisdom, and below it, in a niche, we can see figure of Don Dinís, the founder of the Portuguese university, surrounded by the allegorical figures of Laws and Medicine. Passing through these characteristic gate you enter the Patio das Escolas, where the Joanina Library, Sao Miguel Chapel, University Tower, D.Joao III monument, etc. are located. A world of history, knowledge and tradition.