The Twin Cathedrals and Plaza del Pilar
Stand on Plaza del Pilar and the Ebro river stretches behind you while two cathedrals command the square from opposite corners—a rare architectural pairing that tells Zaragoza's story of competing faiths and rival seats of power. The Cathedral-Basilica of Our Lady of the Pillar rises with its distinctive domes along the riverbank, a structure begun in 1681 that took nearly two centuries to complete, with delays that allowed Francisco Goya to paint the vault frescoes a full century after work started. The basilica venerates the Virgin Mary, believed to have appeared to Saint James the Apostle on a pillar at this spot, and the interior's painted domes remain one of the church's defining features. Across the plaza, La Seo Cathedral occupies the site of a Moorish mosque and blends Romanesque, Gothic, and Mudéjar styles across its 12th-to-19th-century layers. Once the two cathedrals disputed which should hold the diocese's seat until Pope Clement X declared them joint cathedrals with equal status. La Seo holds an exquisite collection of tapestries and closes intermittently during mass. The "Fuente de la Hispanidad" fountain and sculpture occupy the plaza's centre, representing Columbus' discovery of the New World, and the tourist office stands ready to orient you.
Moorish Architecture and Medieval Walls
Zaragoza's medieval past emerges in three Mudéjar churches—a style that weaves Christian and Muslim traditions together—and in the Palacio de la Aljaferia, a Moorish castle whose intricate gold-leaf ceilings and decorative work survive from its days as a royal fortress. The Iglesia de Santa María Magdalena stands out with its square tower and polygonal apse, a 14th-century example that escaped wholesale baroque renovation inside despite its baroque-era interior work. Iglesia de San Miguel de los Navarros echoes Magdalena's tower and apse design but retained a gilded Renaissance high altar by Damián Forment before later gaining a spire. Iglesia de San Pablo completes the trio with a Gothic portal, another Forment altar, and a pyramid-spired octagonal tower flanked by lanterns. The Basílica of Santa Engracia preserves a crypt and doorway from an earlier church where Saint Engratia and companions were said to have been martyred. Outside the churches, Las Murallas—fragments of the ancient wall that ringed the city—still stand to mark the medieval boundary. Puerta del Carmen, a neoclassical gate built in 1789 at the site of one of twelve original city gates, looks ancient but deliberately retains its weathered state from the sieges it endured.
Roman Caesaraugusta Through Four Museums
Zaragoza was founded as a Roman colony by Augustus between 25 and 11 BC as a settlement for army veterans, and the Caesaraugusta route connects four museum sites—the Forum, Theatre, Baths, and Port—each exposing layers of the 1st-century city. The Forum museum walks you through both the original Augustus-era forum and the larger replacement built after the river flooded, with the chance to traverse a Roman sewer. The Theatre, uncovered during urban works in the 1970s, reveals much of the original structure and contains an excellent historical section on the site's later occupation by Muslims and use as the Jewish quarter through the 15th century. The Museo de Zaragoza at Plaza de los Sitios houses celebrated mosaics from Caesaraugusta and one of Spain's finest Goya collections, making it well worth the trip despite temporary closure through March 2026. The Museo Goya (Ibercaja Collection) displays further Goya works and rotating exhibitions. The Educational Museum of Origami in Zaragoza (EMOZ), housed in Centro de Historias, showcases paper-folding craft that astounds in its precision and beauty—accomplished with only folds, no cuts or glue.
Walks Along the Ebro and through Parque Grande
The Puente de Piedra, a stone bridge rebuilt repeatedly since its 15th-century construction to withstand river floods, now carries mostly pedestrian traffic and frames the city's lions—symbols of Zaragoza—in four pillars at its ends. Walking across offers views of the river and the cathedral domes framed together. Parque Grande José Antonio Labordeta sprawls as a vast city park from 1929 with monumental fountain staircases, impressive landscaping, and the city's Botanical Gardens contained within—a place to forget the urban centre entirely and wander among fountains and green space. On hot summer days, public swimming pools scattered across the city offer an alternative to sightseeing, most charging around three euros for entry and staying open until 9 or 10 pm in the evening.
The Aljafería and Regional Parliament
The Palacio de la Aljafería functions today as the seat of the Aragon regional parliament, but its Moorish origins and intricate gold ceilings remain visible and speak to the period when Zaragoza was capital of a taifa kingdom ruled by the Banu Hud in the late 11th century. The palace preserves decorative work from that era and represents the city's time as a centre of Islamic culture before the 1118 Christian conquest made it the capital of the Kingdom of Aragon.
Zaragoza rewards visitors who move beyond the main plaza—the Mudéjar churches reveal how medieval builders merged two traditions, the Roman museums ground you in Caesaraugusta's 1st-century importance, and the parks and riverwalks offer space to absorb the layers of history. Plan a visit around the spring or autumn months when temperatures stay moderate for exploring the streets, and take a Tourist Card if staying several days to reduce costs at the paid museums and galleries.