Lonja de Zaragoza

Lonja de Zaragoza is a Renaissance-era merchant exchange standing on Plaza del Pilar in Zaragoza, right beside the Basílica del Pilar. Built between 1541 and 1551 on the initiative of archbishop Hernando de Aragón, to a design by Juan de Sariñena, it is considered the first and most important Renaissance building in the whole of Aragon.

Why was the exchange built?

The building was designed to give the city's merchants a proper place to conduct business away from church premises — until then, trading had taken place inside La Seo cathedral, which was seen as improper. A dedicated commodities exchange gave commerce a dignified, secular home, matching the city's growing economic weight in the 16th century.

What will you see inside?

The interior is a striking open hall: three naves and five bays of equal height, carried by eight slender columns ringed with a band two-thirds of the way up their shafts. These columns support fifteen star-shaped ribbed vaults, which give the huge room a surprising sense of lightness. The sculptural decoration is attributed to Gil Morlanes the Younger — carved reliefs fill the window reveals, polychrome and gilded floral bosses mark the points where the ribs meet, and grotesque friezes and medallions blend Gothic and Renaissance motifs throughout the hall.

The building is constructed mainly of brick, the material most typical of Aragonese architecture, long prized here thanks to Islamic art traditions and the Mudéjar style also visible at the nearby Aljafería palace. That combination — an Italian, Quattrocento-inspired facade paired with local brickwork technique — makes the Lonja a genuinely distinctive building: Renaissance in spirit, Aragonese in execution.

How to get there and when to visit?

The Lonja stands at the very heart of Zaragoza, on Plaza del Pilar, surrounded by the city's most important landmarks — the Basílica del Pilar, La Seo cathedral, and the city hall. It's a few minutes' walk from anywhere in the historic Casco Histórico, and the nearest tram and bus stops are within a few hundred metres. Visit it while touring the square itself — the facade catches the best light in the early afternoon, and the cool interior offers welcome relief from Aragon's typically hot summers.

What is the building used for today?

Today the Lonja functions as an exhibition hall run by Zaragoza's city council. It hosts temporary art and photography exhibitions and cultural events, keeping the interior lively and open to visitors rather than sealed off as a static monument.

Frequently asked questions

What was the Lonja de Zaragoza originally used for? It was a Renaissance merchant exchange built between 1541 and 1551, where city merchants conducted trade instead of using church buildings.

Who designed the building? Juan de Sariñena designed it, with support from archbishop Hernando de Aragón; the sculptural decoration is attributed to Gil Morlanes the Younger.

What is the most notable feature of the interior? The open hall with three naves resting on eight columns that support fifteen star-shaped ribbed vaults, along with rich carved decoration blending Gothic and Renaissance styles.

What is the Lonja used for now? It serves as an exhibition hall for Zaragoza City Council, hosting temporary cultural exhibitions open to the public.