Fortaleza del Cerro: The Fortress on Montevideo's Hill

Hours and Entry

The Army's Department of Historical Studies, which runs the site, lists the visiting hours as Monday to Sunday, 10:00-18:00. That Monday opening matters: many of the museums in the centre shut on Mondays, so the fortress becomes one of the few historic sights you can enter then. The museums directory confirms that no prior booking is needed.

You simply turn up and walk in. No entry price is published, so carry some pesos in cash for the day. The fortress depends on the Ministry of National Defence, and the Army gives two phone numbers if you want to confirm a visit before making the trip across the bay: (598) 2313 6716 and 2900 1983.

Getting Up the Cerro

The hill stands across the bay from Ciudad Vieja, on the west side of the port. This is the one practical trap for visitors. The city's hop-on hop-off Bus Turístico does not cover the Cerro.

The government gave three reasons when it explained the route: the distance from the port, the short time many cruise ships spend in call, and the turning radius of the double-deckers on the hill's streets. So the fortress needs a taxi, your own car, which you can arrange through car rental in Montevideo, or a private tour. The private tailor-made city tour runs in an electric SUV with a registered guide and the route is agreed with the guide, so the Cerro is exactly the kind of stop you can ask for. Plan your ride back before you go up.

The safe plan is to arrive and leave with the same vehicle.

What You See From the Top

The tourism office describes the reward: a panoramic view over the bay and the port, with the Centro and Ciudad Vieja laid out in front of you across the water, and rural Montevideo stretching away on the other side. Few viewpoints in the city give you both halves at once. In February 2018 the government put up a MONTEVIDEO letters sign at the fortress, the same idea as the better-known sign on the rambla but with the whole city at your feet.

Inside the parade ground, a 25-metre mast flies the Artigas flag every day, raised for the bicentenary celebrations. The walls run 182 metres around, with the bay on one side and the open country on the other.

Arms and Artillery

The Defence Ministry calls it a monographic museum of arms. The colonial artillery spans the 17th to the 20th centuries,. Among the more unusual items are a rare bronze Browning machine gun and Nordenfelt guns, multi-barrel weapons of the late 1800s.

The racks hold flintlock and percussion arms, plus the rifles that served the Army in sequence: Remington from 1876 and Mauser from 1894. A case of duelling pistols carries its own story, because duelling was legal in Uruguay from 1920 to 1992. If you care about old weapons, give the collection more than a glance on your way to the ramparts.

Maps, the Artigas Room and the Time Capsule

Away from the weapons, one room holds maps of the region from the 16th to the 19th century, worth time if you want to see how the Río de la Plata took shape on paper. Another room is devoted to General José Artigas, the national figure whose name the fortress has carried since 1882 and whose flag flies on the mast outside. The Army sealed a time capsule here in 2011 for the bicentenary, to be opened in 2111.

It stays sealed until then. The fortress friends' association also displays a case of objects found buried around the building, dug up over years of care for the site. Together these rooms explain the hill as well as the guns.

Why Spain Built It, 1809-1811

Montevideo fell to a British invasion in 1807. The Spanish governor Francisco Javier de Elío then ordered a fortress on the Cerro to strengthen the city's defences and protect the lighthouse that guided ships into the bay. The military engineer José Antonio del Pozo y Marquy began work in 1809.

The plan is pentagonal, drawn around the lighthouse that stands in the middle today, with walls up to nine metres high in stone and brick. There are no projecting bastions and no moat. The perimeter runs 182 metres.

The gate you use to enter is the builders' gate, not the one drawn in the original plan. The fortress entered action barely finished, when the siege of Montevideo began in 1811, and the royalists handed it over on 22 June 1814, before the city itself surrendered.

Sieges, Raids and a Prison

The hill kept seeing action after the Spanish left. In 1826, during the war with Brazil, Oribe's forces sprang an ambush at the foot of the hill and 71 men of the Brazilian imperial troops died there. In 1843, during the Guerra Grande, Garibaldi and his Italian Legion fought close to the Casa de la Pólvora del Cerro, the powder-store outwork that still survives below the fortress.

In 1870, during the Revolución de las Lanzas, rebels took the fortress at night. Between wars the building served softer duties: it worked as a quarantine lazaretto for arriving immigrants, and from 1895 to 1907 it served as a military prison.

From Fort to Museum

In 1882 the fortress was renamed Fortaleza General Artigas under President Máximo Santos, giving the hill its modern official name. Its heritage status came in steps. It was declared a National Monument on 6 July 1931 under law 8741,.

Restoration followed, and on 12 October 1939 the fortress opened as the Military Museum it still is. The hill itself carries national symbolism beyond the walls: the Army notes that the national shield of Uruguay includes the Cerro as a symbol of strength.

The Defence Ministry's historian traces the city's name back to this hill. When Magellan's expedition passed the mouth of the Río de la Plata in 1520, a mount on the horizon served as a reference point for navigators entering the estuary, recorded as the 'montevidi'. Sailors used that visible hill to fix their position long before any town existed below it.

Over the 17th and 18th centuries the settlement that grew at the bay's edge took the hill's name as its own, and the city of Montevideo grew up named after the mount that stands across the water from its old quarter. When you stand on the summit you are on the feature that named the capital.

Parque Vaz Ferreira and the Memorial

Parque Vaz Ferreira at the foot of the hill is named for Carlos Vaz Ferreira, the Uruguayan philosopher. Within the park stands the Memorial de los Desaparecidos, built for the people detained and disappeared during the dictatorship of 1973-1985. The tourism office describes the design: the names of the disappeared are engraved on two glass plates, and a stone path runs from the shore of the bay up to them, a route walked as a pilgrimage.

It is a quiet, sobering counterpart to the fortress above. If you have walked the ramparts and looked down at the bay, the short walk down into the park gives the hill a second, more recent layer of history.

Playa del Cerro

Playa del Cerro is the west-zone beach below the hill, listed by the city alongside Punta Espinillo, La Colorada, Zabala and Santa Catalina among the west-side sands. The tourism office records its working past: the beach was once used by the people of the area, mostly workers, reached in earlier times by tram, and its main attraction was a steamboat that crossed the bay in about 15 minutes. Today it is a popular walk for the west of the city, with the fortress visible on the slope above.

Do not expect the wide sands of Pocitos on the eastern rambla. Come for the view back across the bay and for a stretch of shore most tourist itineraries skip. See the other beaches of Montevideo before you choose.

The first option is the view only. Walk the walls, read the plaques, photograph the MONTEVIDEO sign and the bay. Our estimate is under an hour at the top.

The second adds the Military Museum, with its artillery, map room and Artigas room. Our estimate is one to two hours for the fortress in full. The third is the hill plus what lies below: the beach, the rambla and the Memorial de los Desaparecidos in Parque Vaz Ferreira, which turns the trip into half a day on the west side.

Whatever you choose, remember the rule of the day. The sightseeing bus does not climb here, so the time budget must include the ride up and the ride back.

- The city of Montevideo is named after this hill. Magellan's 1520 expedition recorded it as the 'montevidi', a reference point for ships entering the estuary. (Defence Ministry) - This is the last great Spanish military engineering work in the Río de la Plata, and one of only three big Spanish fortifications still standing in Uruguay, with Fuerte San Miguel and Fortaleza de Santa Teresa.

(Defence Ministry) - The first lighthouse of the Río de la Plata stands inside the fortress walls, and the whole pentagonal plan was drawn around it. (Descubri Montevideo) - The Army sealed a time capsule in the fortress in 2011 for the bicentenary, set to be opened in 2111. (Defence Ministry) - The Cerro appears on the national coat of arms, where it stands as a symbol of strength.

(Army Department of Historical Studies)

The fortress earns its place on two kinds of day. The first is a Monday, when the museums of the centre are shut but the fortress opens as usual from 10:00 to 18:00. The second is a clear afternoon, when the view across the bay stretches to the far shore.

Pair it with Ciudad Vieja, which you will have just looked at from across the water, and let the hop-on hop-off bus carry you around the rest of the city, since it covers the centre and the rambla but not the hill. If a half-day group tour is your speed, check the half-day regular city tour and ask the operator before booking whether it stops at the Cerro. For more Montevideo attractions and where to stay in Montevideo, see the rest of this guide.