The 1755 earthquake walking route: a self-guided day across Lisbon

What happened, and why the city is legible because of it

At about 09:40 on 1 November 1755, All Saints' Day, with churches full and candles lit, three shocks hit Lisbon over some ten minutes. Around forty minutes later the Tagus withdrew and returned as a series of waves that swept the open quay at Terreiro do Paço. Fire took what the water and the collapse had not, and burned for the best part of a week. Estimates of the dead range from about 12,000 to 40,000 in a city of perhaps 200,000. The royal palace, the opera house opened only that spring, the Hospital de Todos os Santos and most of the lower town were gone.

What makes this a walking route rather than a museum topic is that the rebuild is still the street plan you use today. The Marquês de Pombal cleared the ruins and laid out the Baixa on a grid with standardised facades and a timber frame, the gaiola pombalina, designed to flex — arguably the first systematically earthquake-resistant urban construction in Europe. Walk east to west across the centre and you cross the boundary between what survived, what was rebuilt and what was deliberately left in ruins, and the boundary is visible in the paving under your feet.

Stop one, 10:00: the city that no longer exists

Start at the Museu Nacional do Azulejo, out east on Rua da Madre de Deus, roughly €8 and closed on Mondays. Bus 794 or 718 from Santa Apolónia drops you at the door in ten minutes. Go straight to the top floor for the Grande Panorama de Lisboa, a blue-and-white tile panel about 23 metres long made around 1700 that shows the entire riverfront before the earthquake: the royal palace at the water's edge, the ranks of churches and towers, the ships. Half of what you are looking at ceased to exist 55 years after it was fired.

Spend 45 minutes here and photograph the sections you can identify — the Terreiro do Paço waterfront especially, because you will stand on exactly that spot in three hours. The rest of the museum is a genuine pleasure anyway, housed in the Madre de Deus convent whose gilded church survived with damage and was patched rather than replaced. The café in the old kitchen with the tiled meat-and-fish walls is a decent coffee stop at €2 to €4. Leave by 11:00 and walk or ride the fifteen minutes west along the river to Santa Apolónia.

Stops two and three, 11:30: the medieval city that held

Climb into Alfama. The reason its lanes are crooked and its houses stacked is that this is the pre-earthquake fabric, built on hard bedrock rather than the river-mouth alluvium of the lower town, and it came through 1755 comparatively intact. Walk up through Largo das Portas do Sol, then to São Vicente de Fora, whose facade cracked and whose dome came down, and finally to the Castelo hill, which lost buildings but not its footprint. The contrast is physical: nothing here is straight, nothing is standardised, and every twenty metres the level changes.

Cut down towards the Sé, the cathedral, which lost its bell towers, its chancel and its rose window in the quake and whose reconstruction is a patchwork of romanesque, gothic and twentieth-century restoration in one facade. Entry to the cloister with its archaeological dig is around €5. Just below, at Campo das Cebolas, the Casa dos Bicos survived with its diamond-cut stone front — the upper floors were rebuilt in the 1980s from old drawings, which is why the proportions look slightly wrong if you stare. Lunch here around 13:00 at €12 to €18.

Stop four, 14:00: the tsunami waterfront

Walk west along the river to Praça do Comércio, the square that replaced the palace. Go to the Cais das Colunas steps at the water and turn around. The wave that came up here on the morning of 1 November is variously reported at five to six metres at this point in the estuary; people who had run to the open quay to escape falling masonry were caught by it. The square as you see it is Pombal's answer — arcaded, uniform, symmetrical, with the king on a horse in the middle and a triumphal arch closing the north side.

Climb the Arco da Rua Augusta, about €3.50, for a rooftop view down the grid. From up there the plan reads clearly: nine parallel streets running north to south, cross streets at right angles, and identical cornice heights. Notice that the street names are trades — Rua dos Sapateiros for shoemakers, Rua dos Douradores for gilders, Rua da Prata for silversmiths — because Pombal assigned crafts to streets in the new town. Almost none of those trades remain, but the names outlived the earthquake, the guilds and the twentieth century.

Stop five, 15:00: underneath the grid

The single best stop on this route is also the least known: the Núcleo Arqueológico da Rua dos Correeiros, a dig beneath a bank building in the middle of Baixa, entered from Rua Augusta. Visits are free but by guided slot, usually in Portuguese and English, and you should book online a day or two ahead. Downstairs you walk on glass over Roman fish-salting tanks, Islamic-period foundations and the crushed floor levels of the pre-1755 street, all of it sitting directly under the Pombaline building above.

The guides show you the gaiola pombalina, the timber lattice built into the masonry walls to absorb movement, sections of which are exposed here. Pombal had prototypes shaken by troops marching around them before he approved the design. The subtext of the whole site is that Lisbon did not simply rebuild — it engineered. Allow 50 minutes. Afterwards, walk two minutes to Igreja de São Domingos on Rossio, wrecked in 1755, rebuilt, then gutted by fire in 1959 and reopened with its scorched red columns left raw. It is free, dim and the most affecting interior in the city.

Stop six, 16:30: the ruin they never repaired

Ride the Elevador de Santa Justa or, better, walk up Rua do Carmo and around, and enter the Convento do Carmo, about €7. The gothic nave lost its roof when the vaults came down on a congregation at mass, and the decision after the earthquake was to leave it open to the sky. Standing between the arches with nothing above them is the closest this city comes to a memorial, and it works precisely because nothing has been staged. The archaeological museum in the old chancel holds tombs, Roman inscriptions and two Peruvian mummies, which is odd and worth twenty minutes.

From the Carmo terrace you look straight across at the castle, and down onto Chiado, which burned in a different disaster — the fire of August 1988 that took out the department stores on Rua do Carmo. The rebuild by Álvaro Siza kept the Pombaline facades and put new buildings behind them, which is a two-century-later reply to the same question about how a city recovers. Finish here at 17:30, or push on ten minutes to Igreja de São Roque, free, whose flat painted ceiling survived the quake and whose Chapel of St John the Baptist was shipped from Rome in pieces.

Extensions, food and where to sleep on this route

Two half-day extensions, if the subject grips you. The Mãe d'Água das Amoreiras reservoir, around €4, is the terminus of the Águas Livres aqueduct, finished in 1748 and standing entirely undamaged seven years later — the aqueduct arches at Campolide still carry the city's original water supply line and can be walked on guided visits. And the Museu de Lisboa at Palácio Pimenta in Campo Grande, around €3 to €5, holds a large scale model of the pre-earthquake city, which is the three-dimensional companion to the tile panorama you started with.

For dinner, the streets north of Rossio around Rua das Portas de Santo Antão are the historic restaurant row and mostly overpriced now at €30 to €45 a head; the better bet is the tascas in the grid south of Rua da Vitória, €14 to €22 with wine. Sleep in Baixa itself if you want to wake inside the subject — mid-range doubles run €130 to €200, and the buildings you are sleeping in are the ones with the timber cages in the walls. Chiado is €30 to €60 more and quieter above the fourth floor; Alfama is atmospheric but adds a hill to every return.