Arco Chato

In the heart of the historic Casco Viejo district, among the ruins of the ancient Santo Domingo convent, lies one of the most mysterious architectural gems that Panama has given the world — the legendary Flat Arch (Arco Chato). Built back in 1678, it still captures the imagination of engineers and tourists with its incredible construction, which lacks any internal supports.

This landmark is officially recognized as part of the UNESCO World Heritage. The main feature of Arco Chato lies in its shape: a nearly horizontal span that holds up solely through the precise calculation and skill of colonial-era stonemasons, without the use of glue or modern fasteners. This place literally breathes history, serving as a silent witness to the city's rebirth after pirate raids.

Today, the ruins surrounding the arch have been transformed into an atmospheric open-air museum in Panama City. Travelers come here to touch the ancient red brick walls and enjoy the silence in the shade of the old vaults, which miraculously survived numerous fires and earthquakes of past centuries.

For your convenience in planning your route, below are the official address details for this landmark.

Visiting the Flat Arch is primarily an aesthetic pleasure and an opportunity to touch the living past. The main thing to do here is to contemplate this unique engineering solution. Be sure to walk around the ruins of the Church of Santo Domingo from different angles to see how the massive stones hold each other without visible supports.

For photography enthusiasts, this place is a real find. The play of light and shadow on the ancient brickwork at different times of the day creates unique shots. The arch serves as a magnificent backdrop for portraits, especially in the rays of the setting sun, when the stone takes on a warm ochre hue.

After exploring the arch, it’s worth taking a stroll through the adjacent streets of Casco Viejo. Nearby are the Museum of Colonial Religious Art and the famous Church of San Jose. You can stop by small local artisan shops for authentic souvenirs or relax in one of the colonial cafes, observing the steady pace of life in the old town.

The Flat Arch is conveniently located in the heart of the historic Casco Viejo district on Calle 3. If you are staying in the center of Panama City, the easiest way to get here is by taxi or via ride-sharing apps (such as Uber). The trip will take about 10–15 minutes depending on traffic.

For those who prefer public transport, buses heading to the Cinta Costera waterfront are a good option. From there, you can take a pleasant walk into the old town. You can also take the metro to the Santo Tomás station, and then catch a taxi or walk, enjoying the colonial architecture along the way.

From the international airport, the drive will take about 30 minutes. It is worth keeping in mind that Casco Viejo is primarily a pedestrian area with narrow streets, so walking through the district itself is the best way to get around. During the day, it is completely safe and allows you to observe every detail of the historic buildings.

The history of this remarkable site began in 1678, when the church and convent of Santo Domingo were constructed. After the original capital was destroyed, a new city center began to be actively developed in the San Felipe area, where architects applied solutions that were innovative for the time. The Arco Chato became a prime example of colonial-era engineering mastery.

The most striking fact is that the arch was built without the use of adhesive compounds or central supports. For centuries, it withstood earthquakes and fires that destroyed the buildings surrounding it. The resilience of this construction even served as an argument in favor of Panama when choosing the site for the famous Panama Canal: engineers reasoned that if such a fragile-looking arch had stood for centuries, the region must be seismically stable.

In 1997, the ruins of the convent, along with the entire historic center, were included in the UNESCO World Heritage list. Although a portion of the choir structure collapsed due to age in 2003, the Flat Arch itself was carefully restored to continue delighting travelers with its elegance and simplicity. Today, it remains one of the most photographed objects in the entire country of Panama.

Exploring the Flat Arch itself and the ruins of the Santo Domingo convent usually takes about 30 to 45 minutes. This is enough time to examine the masonry, take memorable photos, and read the information plaques.

However, we recommend setting aside at least 2–3 hours for a visit to this area. The arch is located in the picturesque Casco Viejo neighborhood, where interesting museums, art galleries, and cozy cafes are hidden around every corner, perfect for a break after a walk through historic sites.

The landmark is open to visitors daily. The official opening hours, during which the ruin grounds are open for a full tour, are as follows:

Monday — Sunday: from 6:00 to 19:00.

Although the site is outdoors, it is recommended to visit during daylight hours to fully appreciate the details of the ancient masonry and take high-quality photographs.

The historic quarter where the Flat Arch is located is literally steeped in the atmosphere of the past, and exploring its surroundings will allow you to feel the spirit of old Panama more deeply. Strolling through the neighboring streets, you can discover cozy plazas, colonial cathedrals, and modern entertainment centers that harmoniously complement the capital's character.

Below are some interesting places located at various distances from Arco Chato: