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Portugal
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Santo Isidoro

Forte de Santa Susana

Highlight • Historical Site

Forte de Santa Susana

Hiking

4.9

(33)

Forte de Santa Susana, also known as Forte de São Lourenço, is a historic 17th-century coastal fortress situated in the parish of Santo Isidoro, within the municipality of Mafra, Portugal. Standing at an elevation of 68 meters, this significant historical site is located just south of the picturesque São Lourenço beach, offering commanding views of the Atlantic coastline within the Lisbon District.

Visitors are consistently drawn to Forte de Santa Susana for its rich historical narrative and its strategic position…

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    April 1, 2022

    Hiking

    Santa Susana Fort, also known as Fort São Lourenço, was built during the Portuguese Restoration War (1640-68). It was one of many coastal forts built to protect against Spanish invasion and pirates. Very nice place with interesting rock formations.
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    March 31, 2025

    Hiking

    A small fort that makes an excellent sunset subject. The building is locked and secured with cameras and lighting.
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    Routes here

    Best routes to Forte de Santa Susana

    4.9

    (23)

    130

    hikers

    1. Forte do Milreu – Cliffs of São Lourenço loop from Ericeira

    9.76km

    02:42

    170m

    170m

    Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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    Moderate

    Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

    Hard

    Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

    Moderate

    Details

    Informations

    Elevation 70 m

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    Tuesday 10 March

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    32 %

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    Max wind speed: 34.0 km/h

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    Location: Santo Isidoro, Lisbon, Portugal

    Frequently Asked Questions

    What is the historical significance of Forte de Santa Susana beyond its initial construction?

    Beyond its role in the Portuguese Restoration War (1640-68) against Spanish invasion and pirates, Forte de Santa Susana was strategically integrated into the 2nd line of the Lines of Torres Vedras during the Peninsular War (1807-1814). These defensive lines were crucial in protecting Lisbon from Napoleonic forces under the Duke of Wellington. It also served as a barracks until 1948.

    Is the interior of Forte de Santa Susana accessible to visitors?

    No, the interior of Forte de Santa Susana is not accessible to the public. While visitors can explore the grounds around the structure and appreciate its exterior Baroque-era military architecture, the building itself is locked and secured. It is recognized as a property of municipal heritage interest.

    Are there any permits required to visit Forte de Santa Susana or hike nearby trails?

    No, there are generally no permits required to visit the exterior of Forte de Santa Susana or to hike the public coastal trails in the surrounding area. The site is freely accessible for visitors to enjoy the historical ambiance and scenic views.

    How can I get to Forte de Santa Susana using public transport?

    While parking is generally available, public transport options directly to Forte de Santa Susana can be limited. It is located in the parish of Santo Isidoro, Mafra. Visitors typically reach the area by bus services connecting from Mafra or Ericeira to São Lourenço beach, followed by a walk to the fort. Checking local bus schedules for routes to São Lourenço or nearby areas is recommended.

    Is Forte de Santa Susana accessible for visitors with mobility challenges or wheelchairs?

    The exterior grounds around Forte de Santa Susana are generally uneven and may include natural terrain, which could pose challenges for visitors with mobility issues or those using wheelchairs. While the fort itself is at an elevation of 68 meters, the immediate area might not be fully accessible. It's advisable to assess the conditions upon arrival.

    How much time should I allocate for a visit to Forte de Santa Susana?

    Since the interior is not accessible, a visit to Forte de Santa Susana itself typically takes 30 minutes to an hour to explore the exterior, read any informational plaques, and enjoy the coastal views. If you plan to combine it with a hike along the nearby coastal trails or a visit to São Lourenço beach, you should allocate more time, perhaps 2-3 hours or more.

    Are the hiking trails around Forte de Santa Susana suitable for beginners or families with young children?

    Yes, there are various walking routes and coastal trails near Forte de Santa Susana, with options suitable for different fitness levels. Many trails offer relatively easy terrain, making them family-friendly and suitable for beginners. These routes often provide stunning views of the Atlantic coastline and interesting rock formations. Always check specific route details for elevation and distance.

    Is Forte de Santa Susana a dog-friendly location?

    Yes, the exterior grounds and surrounding coastal trails around Forte de Santa Susana are generally dog-friendly. Many visitors enjoy walking their dogs in the area. Please ensure your dog is kept on a leash and that you clean up after them to maintain the natural beauty and cleanliness of the site for all visitors.

    What are the best viewpoints or natural features to look out for near the fort?

    Besides the fort itself, the area is renowned for its picturesque views of the Atlantic coastline. Visitors often highlight the interesting rock formations along the coast south of São Lourenço beach. The fort's elevated position also offers excellent panoramic vistas, especially during sunset, making it a prime spot for photography.

    Are there any cafes, restaurants, or accommodation options close to Forte de Santa Susana?

    Forte de Santa Susana is located near São Lourenço beach, which has some local cafes and restaurants. For a wider selection of dining and accommodation, the nearby towns of Ericeira and Mafra offer numerous options, ranging from casual eateries to hotels and guesthouses. These towns are just a short drive away.

    What is the best time of year to visit Forte de Santa Susana to avoid crowds?

    While the intro suggests late afternoon for sunsets, to avoid larger crowds, consider visiting during the shoulder seasons (spring: April-May, or autumn: September-October). Weekdays are generally less busy than weekends. Summer months (June-August) tend to attract more visitors to the coastal areas of Portugal.

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