The Dvojna vrata (Porta Gemina) is a Roman city gate located in Pula, Croatia.

It was one of the ten city gates of Pula, standing at the north side of the capitol.

There were about ten city gates, of which the Porta Gemina and part of the walls connecting it to Giardin square are still visible today.

Today, the gates – in front of which were discovered the remains of a partially reconstructed octagonal mausoleum dating to the 2nd or 3rd century AD – lead to the Archaeological Museum of Pula, to the Castle, and a small Roman theatre.

[4] The gateway stands opposite the modern citadel, which is built on the site of the ancient capitol.