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Puerta de Mar y baños termales - Roman sea wall gate

MUHBA Porta de Mar free museum with an explanation about the roman wall sea gate and the Roman thermal bathhouse

Updated: Jun 28, 2024 by: Barcelona Travel Hacks Views: 1.5k

About Puerta de Mar y baños termales - Roman sea wall gate

Barcelona's Roman wall is partially remaining today with sections that can be viewed. This section of the Roman wall is the Porta de Mar in the Gothic Centre. It was the sea facing gatehouse and thermal bathhouse complex outside of the walls of the Roman city of Barcino that led onto what was the beach and port of Barcelona.

Outside of the city walls were two Roman thermal bath complexes, one for men and one for women, built between the 1st and 2nd century AD.

Next to the bath houses there were other constructions most likely were a horreum, a large underground warehouse linked to the port. The large portico of this important complex also monumentalised the Porta de Mar sea gate which was the most important entrance into Barcino (Roman Barcelona).

In the 4th century AD a new wall with 76 towers was built in to surround Barcino which was constructed on the outside of the existing wall, strengthening the defensive enclosure of the city.

The eastern Decumana Gate (sea gate) was the gate which merchants and goods arrived from all over the Mediterranean. At the gate there was a guard who collected the Portoria, taxes that were paid on land or sea transport of goods and people.

Visiting Puerta de Mar y baños termales - Roman sea wall gate

The museum is free to enter but has restricted opening hours. Behind the museum is a small plaza with more roman wall that can be accessed from Carrer del Correu Vell. Following this street a little further ends up in Plaza dels Traginers which has the remains of a roman corner guard tower of the wall.

The Roman Ruins in Barcelona Gothic Quarter

Roman Barcelona City Walls

1: North East city gate survives and is now part of the Barcelona Dioceses Museum.

3: Roman wall remains at Plaza de Ramon Berenguer. on top of which the 14th century Gothic Chapel of Santa Agueda now stands and at the bottom the remains of the original moat.

4: The remains of the merchants houses are preserved in the basement of the Barcelona City History Museum.

5: Four remaining columns of the Temple of Augustus.

6: The south east corner watch tower and Sea Gate can be found in Plaza dels Traginers and MUHBA porta de Mar sites.


Unlike today, Barcino was not the Roman Capital of Catalonia but a provincial city where retired soldiers of the Roman army lived. The principal Roman city in Catalonia was Tarraco (Tarragona), which was much larger in size and importance and was the first Roman settlement in Spain. Read more about Roman Tarragona.

What to take with you for Puerta de Mar y baños termales - Roman sea wall gate

The roman walls are viewable from street level with an elevator to a second level.

A bicycle parking pack can be found in the small square behind Porta de Mar.

Puerta de Mar y baños termales - Roman sea wall gate Summary of Prices

Train/Bus Fare Entry Ticket Additional Information Train/Bus Fare Entry Ticket Additional Information Adult Zone 1 T-casual FREE Child T-familiar FREE Free Entry? Free Entry Wednesday 10:00h to 13:00h and Saturday 10:00h to 13:30h (except August)

Getting to Puerta de Mar y baños termales - Roman sea wall gate

Address: Carrer del Regomir 4, barcelona. 8002

Nearest TMB Metro is Juame I on the yellow (L4) line. Use a T-Casual or Hola-Barcelona travel card.

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