Santiago de Compostela exists because of a legend. In the ninth century a hermit named Pelagius is said to have followed strange lights to a field in the forest and found a tomb, and the bishop declared it the grave of the apostle James. A chapel went up, then a church, then a cathedral, and the town that grew around it became the end of the Camino de Santiago. The Vatican stays uncommitted on whether the relics are really James's, which hasn't stopped more than 500,000 people from collecting a Compostela here in 2026 alone. The Santiago de Compostela Cathedral was begun in 1075, and the old town around it has been a UNESCO World Heritage Site since 1985.
It's a small city of about 96,000 people, which is why three days is the right length. Two days cover the cathedral, the squares, the market and the park views, and the third goes west to Fisterra, the cape the Romans took for the end of the world. Be honest about the weather: this is one of the rainiest cities in Spain, with about 1,800 mm a year. A rainy afternoon suits the museums and the bars.
Day one is the Praza do Obradoiro and the cathedral, day two is the market, the monasteries and the Alameda, and day three is the Costa da Morte. Start on a Tuesday if you can: the Museo do Pobo Galego is closed on Mondays and the Mercado de Abastos on Sundays, so Tuesday to Thursday keeps every door open.
Set your expectations for now: the cathedral has put the Botafumeiro on hold for restoration, the roof tour may not be running, and the Pilgrim's Mass has moved to the Church of San Agustín while the main altar is under works. The basilica, the Pórtico da Gloria, the square and the old town are all open, so day one is still a full day, just without the famous swinging censer. And 2027 is a Holy Year, which starts on 31 December 2026 and means far bigger crowds. More of Spain is a flight away, including Bilbao and San Sebastian. The nearby towns and the Rías Baixas are under More time.