Mercati di Traiano Museo dei Fori Imperiali

Interesting facts

1. 1

   The complex was constructed between 100 and 110 AD, largely attributed to the architect Apollodorus of Damascus.

2. 2

   The name 'Via Biberatica' likely derives from the Latin 'piper' (pepper), suggesting it served as the center for spice or food merchants.

3. 3

   The Great Hemicycle was designed to function as a monumental retaining wall to stabilize the Quirinal Hill after excavations for the forum.

4. 4

   Many of the museum's exhibits were reconstructed from thousands of marble fragments found in the area, often using an 'anastylosis' technique.

5. 5

   The site originally housed roughly 150 independent commercial units, known as tabernae, arranged across six distinct levels.

6. 6

   The structure features a unique 'firewall' design, with thick walls and brick-vaulted ceilings intended to prevent the spread of fire between shops.

7. 7

   The upper floors of the complex served as administrative offices for the emperor’s bureaucracy, overseeing the trade handled below.

Overview

Mercati di Traiano is the world's oldest surviving multi-level shopping complex, functioning as an administrative and commercial hub for Trajan's Forum. The structure consists of a sophisticated series of vaulted rooms and terraces carved directly into the Quirinal Hill. It serves as the Museum of the Imperial Fora, housing architectural fragments recovered from the adjacent historical forums. The museum occupies the Great Hemicycle and the smaller lateral halls, which were originally linked by internal staircases and pedestrian walkways. The site demonstrates advanced Roman engineering, including the use of brick-faced concrete and barrel vaulting to support the hillside. Visitors traverse the ancient Via Biberatica, a rare intact Roman shopping street still paved with original volcanic basalt stones. The museum displays significant sculptural remnants, including decorative friezes and column capitals from the Forum of Trajan, Forum of Augustus, and Temple of Peace. Architectural interventions preserved the ruins while allowing public access through elevated walkways and internal galleries. The site remains one of the few places in Rome to view the transition between administrative office spaces and ancient commercial stalls.

Insider tips

• Wear sturdy, closed-toe walking shoes to navigate the uneven, original Roman stone paving.

• Spend time on the upper terraces for unique, elevated views overlooking the Forum of Trajan.

• Check the museum's temporary exhibition space, as it often hosts rotating displays that utilize the ancient vaulted rooms.