Islamic heritage in Portugal: Mértola, Silves and Lisboa

Published 20 March 2026 · Last reviewed 26 April 2026 · By team editor

Between 711 and 1249, much of what later became Portugal was under Islamic rule. Al-Gharb al-Andalus — the western al-Andalus — built cities, libraries, public baths, and an agricultural system that changed the southern landscape. Traces of that civilisation survived the Reconquista in the buildings, place names, and cooking. Today, Muslim communities pray in modern mosques a few steps from the monuments their cultural predecessors built. This guide combines the history with practical information for visiting Muslims.

Mértola: the mosque-church

Mértola, in the southern Alentejo, is probably the most symbolic site of Islamic heritage in Portugal. The town was an important river port under Islamic rule, known as Martula. Its 12th-century mosque was converted into a church after the Reconquista in 1238 — but the layout survived intact: a hypostyle hall with five naves of four bays each. The columns, horseshoe arches, blocked mihrab, and niches all point to the original structure. It's the only medieval mosque in Portugal whose architecture has survived to this degree.

The Igreja Matriz de Mértola welcomes visitors today (free or token-fee admission). For Muslim visitors, walking in and recognising an Andalusi mosque inside a parish church is a strange experience. The Mértola Islamic Museum, in the same town, holds Portugal's most important collection of Islamic ceramics and coins, with pieces from the 9th to the 13th century.

Where to pray: Mértola has no active mosque today. Muslim visitors pray at home or in their accommodation. The nearest Friday prayer is in Beja, about 50 km away.

Silves: castle of al-Gharb

Silves, in the Algarve, was the capital of al-Gharb al-Andalus through much of the Islamic period. Known as Xelb, it was described by Arab geographers as a city of great beauty, with libraries, baths, and prosperous markets. Silves castle is one of Portugal's best-preserved Islamic castles. It was where the Muslim governors of al-Gharb lived. The red sandstone walls, cisterns, and underground storerooms date from the 12th century.

The Municipal Archaeology Museum, next to the castle, holds Islamic finds from the city. Its centrepiece is a vast Almohad cistern-well. The ruins of the city's Islamic baths, rediscovered in recent excavations, are also open to visitors.

Where to pray: The nearest Friday prayer is in Faro, about 65 km away, at the Mesquita do Faro. For daily salat, informal prayer spaces serve Muslim workers and residents across the Algarve.

Lisboa: the Mouraria and the Mesquita Central

Lisboa, known under Islamic rule as al-Ushbuna, was conquered by King Afonso Henriques in 1147. The Muslim population stayed for some centuries in the Mouraria neighbourhood, outside the old walls. The current neighbourhood doesn't have many physical traces of the Islamic period, but the name and the labyrinthine street layout point to its origin.

Since 1985, the Mesquita Central de Lisboa, in the Praça de Espanha district, has been the centre of contemporary Muslim community life. It's the largest mosque in the country, holding over a thousand worshippers. It welcomes respectful non-Muslim visitors outside prayer hours and has a cultural centre attached.

Where to pray in Lisboa: The Mesquita Central de Lisboa (Av. José Malhoa) runs all five daily prayers and Jumu'ah. The Mesquita Aicha Siddika in the Mouraria serves a smaller community. Prayer rooms also exist in Martim Moniz, Sacavém, and around Estrela.

Halal in Lisboa: Martim Moniz and Intendente have most of Lisboa's halal dining, with Bangladeshi, Pakistani, Indian, and Nepalese restaurants. Halal bakeries in the Mouraria get particularly busy during Ramadan.

Travel logistics

Mértola, Silves, and Lisboa are reasonably well connected. From Lisboa, the Alfa Pendular train runs to the Algarve via Tunes (you transfer there for Silves). Mértola has no rail connection — get there by car or bus from Beja, about 50 km away. For prayer times during your visit, see the corresponding city page at /cities.