Ponttor, Medieval city gate in Aachen, Germany.

The Ponttor is a rectangular three-storey gatehouse of rough grey and brown stone in Aachen, North Rhine-Westphalia. Its taller right-hand block has a steep dark slate roof with two finials and small red-framed dormer vents, and a tall pointed archway opens onto a dark passage. A lower left wing holds a smaller pointed arch, and a round turret with a conical slate roof marks the junction of the two blocks.

The gate was built in the early 14th century as Aachen expanded its city walls to protect a growing urban area. Over the following centuries it was reinforced several times as military methods changed.

The name Ponttor comes from the Latin word for bridge, pointing to a crossing that once existed near this spot. Visitors standing in front of the gate today can read this layered past directly in the stonework of the two round towers.

The gate sits in the northern part of Aachen's old town and is easy to reach on foot from the city center. It can be seen from the outside at any time of day, making it a natural stop on a walk along the old city walls.

The name does not refer to a bridge at the gate itself: the surrounding Pontviertel was named first, after a bridge that once crossed swamps near the Annuntiatenbach, and the gate simply took the district's name. No stream flows by the Ponttor today.