Palace of the Popes
When Pope Alexander IV fled Rome’s political turmoil in 1257, he transformed Viterbo into a papal stronghold. The expanded palace he built became the backdrop for the Church’s longest conclave and the tragic death of a pope.
At a glance
The Palace of the Popes stands at the heart of Viterbo’s Colle del Duomo, a monumental complex representing one of medieval Italy’s most significant political pivots. Expanded from the Episcopal Curia seat, it served as the papal residence during a critical period of Church history.
History
Pope Alexander IV arrived in Viterbo in 1257, driven from Rome by hostile factions led by Senator Brancaleone degli Andalò. The expansion of the palace seat was arranged by Capitano del Popolo Raniero Gatti, a member of an influential local family whose influence shaped the building’s development.
Under Pope Clement IV’s pontificate, further architectural enhancements followed. The city’s affection for Clement IV was profound; upon his death, Viterbo’s people called for his beatification. On 11 May 1277, part of the palace’s recently constructed wing collapsed, mortally wounding Pope John XXI.
What you see
The palace’s most significant interior space is the “Aula della Conclave,” the large audience hall built with Pope Clement IV’s consent. Its scale and proportions reflect the importance placed on papal ceremonies and gatherings.
The “Loggia delle benedizioni”—better known as the “Loggia dei Papi”—built in 1267, exemplifies elegant medieval architecture. Its harmonious design demonstrates the refined taste of the papal court and its local patrons during this period of Viterbo’s prominence.
Cultural significance
The palace witnessed the Conclave of 1268–1271, the longest in Church history, lasting 1006 days. This event secured Viterbo’s place in papal affairs and architectural history, demonstrating how political necessity shaped monumental building in medieval Italy.
The complex remains part of Viterbo’s defining cultural landscape, anchoring the city’s identity as a medieval papal centre and testament to the volatile relationship between the papacy and Rome’s political powers.
Key facts
- Address: Piazza San Lorenzo, 1–8, 01100 Viterbo
- Coordinates: 42.41570651090652, 12.10117220878601
- Phone: 320 791 1328
- Website: http://www.archeoares.it/palazzo-dei-papi/
Practical information
Visits to the palace are arranged through the Museo del Colle del Duomo di Viterbo. Contact the museum directly to confirm opening hours and arrange access.
Getting there
The palace is located on Piazza San Lorenzo in the heart of Viterbo’s historic centre. You can contact the Museo del Colle del Duomo for directions and visitor information.
Sources & resources
Find it on the map
See this place and what’s around it →Historical events at this place (2)
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