2025 was a great year for me and included another first—my first cruise. Our ship departed from Barcelona, so we planned a couple of extra days in the city before the cruise began. For me, that meant continuing a personal exploration of ancient Roman influences across Europe. While the Cardo Maximus in Barcelona initially drew me in, the most memorable Roman site I encountered in Barcelona turned out to be one I almost missed—the Praetorian Gates, the ancient entrance to Barcino.

Barcino, modern-day Barcelona, was founded during the reign of the first Roman emperor, Augustus (27 BCE–14 CE). As I researched Roman Barcelona, I realized that its ruins aren’t confined to a single site or street. Instead, they appear in fragments throughout the Gothic Quarter—woven into walls, plazas, and even the foundations of the modern city itself.

Many Roman cities followed the same planning principles visible in Barcelona’s street layout — a concept explored in more depth on my interactive map of cardines maximi across the Roman world.

Barcelona itself is a beautiful city, known for its beaches, vibrant neighborhoods, and, in my opinion, how well it balances preservation with daily life. We started our day on the HOHO (hop-on, hop-off bus), making several stops before heading to the Roman aqueduct, the historic heart of the city. Located about a 15-minute walk from the seafront, the Gothic Quarter is home to Barcelona’s Roman walls, as well as the remains of the Cardo Maximus and Decumanus, the two main streets of Roman Barcino.

We walked through the narrow streets, admiring the shops along the way, until we reached Plaça de Sant Jaume. This square is the political and cultural hub of Barcelona and marks the intersection of the Cardo Maximus and the Decumanus. That day, a protest was moving through the area, and we paused to watch it pass—only later realizing it would cross the same intersection once used by Roman citizens nearly two thousand years ago.

After walking along the Cardo Maximus, we went in search of more Roman ruins. A friendly museum staff member pointed us toward the Muralla Romana, the ancient Roman walls of Barcelona. The contrast between modern brickwork and ancient Roman stone is striking, but what amazes me most is how seamlessly the modern city has been built directly on top of Roman foundations—layer upon layer of history still supporting everyday life.

Back at the hotel, I reviewed our day’s route against a map of Roman Barcelona and that’s when I realized I had overlooked one of the most important Roman structures in Barcelona: the Praetorian Gates (Porta Praetoria), the ancient entrance into Barcino. 

The next morning was departure day, and I made a plan to get up early, take the Metro, and see the Praetorian Gates (Porta Praetoria) before leaving Barcelona. My partner chose not to join me, so at 6:00 a.m. I set out alone and took a short 15–20 minute ride back to the Gothic Quarter. As the city slowly woke up and most shops remained closed, I made my way to the gates.

Standing at the Praetorian Gates in the early morning light felt different from walking the Cardo Maximus the day before. This wasn’t just a Roman street or a surviving wall—it was the threshold into ancient Barcino. Part of the Roman aqueduct still connects to one of the gates, a powerful reminder of how advanced Roman engineering was and how much of it still endures.

As the sun began to rise, I imagined what it might have been like to enter the city through these gates in 10 BCE, passing from the outside world into Roman Barcelona. Traveling often shows us beautiful places, but moments like this—quiet, unexpected, and deeply connected to the past—are what stay with me longest.