An ambitious renovation project at a hotel in Barcelona’s historic Gothic Quarter has yielded a series of remarkable discoveries, including a century-old message in a bottle and major Roman archaeological remains that are forcing historians to rethink the layout of the ancient city.
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Workers expanding the Gran Hotel Barcino on Carrer de Jaume I uncovered historical treasures spanning nearly two millennia, from Roman Barcino to the early 20th century. Formerly Casa Requesens, the building reveals itself as a microcosm of the city’s layered past.
A Century-Old Secret
Among the most intriguing finds was a time capsule hidden behind a window bricked up in the early 1900s. When workers carefully dismantled the wall, they first found a handwritten note on the shutter reading, “Missatge en una ampolla” (Message in a bottle), according to a joint press release from Gargallo Hotels and the Barcelona City Council’s Institute of Culture (Icub).
Another scrawled warning advised, “Ojo con el tapón, hay dinero” (Be careful with the cork, there is money). Behind it lay a sealed bottle containing a letter. The document, dated 1925, recorded the building’s sale to a congregation of nuns for 190,000 pesetas. The nuns converted the property into a convent the following year.
Hotel room 110 preserves and displays this small but fascinating piece of history, offering guests a direct connection to the building’s recent past.
Rewriting Roman History
While the message in a bottle provides a charming human story, the archaeological finds in the hotel’s basement hold monumental importance. Excavations revealed a significant section of the original Roman forum, the civic and commercial heart of ancient Barcino, dating back to the 1st century BC.
This discovery prompted experts to call it a “90-degree turn” in the interpretation of Roman Barcelona’s urban plan. Until now, it was widely believed that the city’s forum was aligned with the cardo maximus, the main north-south road running parallel to the sea. However, as detailed in a previous Barna.News report on the vast Roman forum unearthed, new evidence shows the forum was actually aligned with the decumanus maximus, the primary east-west axis running from the mountains towards the sea.
This fundamental shift in understanding reconfigures the entire map of the Roman city that grew into modern Barcelona. The hotel works with the Barcelona History Museum (MUHBA) to preserve and share this profound discovery.
A Museum Within a Hotel
The hotel’s management embraces its unique historical position, integrating these discoveries into the guest experience. Roman forum remains are now visible through a glass floor in the breakfast area. Visitors can thus dine directly above ancient history.
Room 110 has become a small museum exhibit. Alongside the bottle and its letter, the windowsill incorporates a fragment of a Roman pedestal, still bearing 12 letters of an as-yet-undeciphered inscription. The layered history of the building further showcases a beautifully preserved 14th-century Gothic window, a finestra coronella complete with a courting bench, visible on the building’s facade on Carrer Arlet.
The delicate balance of preserving heritage while continuing modern use presents a constant challenge in the Gothic Quarter, an area also facing new civic initiatives like the Ciutat Vella cleaning plan to tackle grime and odours. According to reporting by Tot Barcelona, Gargallo Hotels and MUHBA intend to organise guided public tours, allowing all citizens to witness the site’s historical significance firsthand.
The finds at the Gran Hotel Barcino serve as a powerful reminder that in a city as ancient as Barcelona, history is never far from the surface, waiting for rediscovery by chance or by design.
