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St. John

Top 4 Castles around St. John

Best castles around St. John features a collection of historical fortifications and ruins situated in a coastal environment. This area is characterized by its strategic maritime history, with structures built for defense and historical estates. The landscape offers views of the sea alongside architectural remnants. Visitors can explore sites that reflect centuries of historical significance.

Best castles around St. John

  • The most popular castles is The Royal Citadel, Plymouth, a castle that was built in the late 1660s to…

Last updated: June 29, 2026

Radford Castle and Hooe Lake Shipwreck

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Radford Park is a beautiful green space on the edge of Plymstock with a rich history. A grand Elizabethan property stood in the park originally, Radford House, owned by the …

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The Royal Citadel, Plymouth

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This dramatic 17th-century fortress was built to defend the coastline from the Dutch. The fortress, owned and managed by English Heritage, is still used by the military today.

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Mount Batten Tower

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Mount Batten is a rocky peninsula in the northeast corner of Plymouth Sound. Mount Batten Artillery Tower, which was built in the 1650s, guards the southern approach to the harbour …

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Trematon Castle

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Trematon Castle has a 12th century keep like nearby Restormel castle. It was built on the site of a Roman fort in a Motte and Bailey style.

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Wolf Beyenburg
July 17, 2023, The Royal Citadel, Plymouth

The fortress is still a military facility and cannot be visited.

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51m
July 4, 2023, Trematon Castle

Trematon Castle has a 12th century keep like nearby Restormel castle. It was built on the site of a Roman fort in a Motte and Bailey style. You can visit the castle but it's only open on Thursday, Friday, and Saturday. You also get a good view from the footpath as you walk past.

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This 17th century defense is still in use by the British military as the base of 29 Commando Regiment of the Royal Artillery. It was originally built as part of defenses against the Dutch. It is possible to visit the citadel for a guided tour. See the English Heritage website for details https://www.english-heritage.org.uk/visit/places/royal-citadel-plymouth/

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Radford Park is a beautiful green space on the edge of Plymstock with a rich history. A grand Elizabethan property stood in the park originally, Radford House, owned by the Harris family for over 500 years. Hosting parties attended by figures such as Sir Walter Raleigh and Sir Francis Drake, this was quite the place to be seen. Demolished in the late 1930s after falling into disrepair, only the grounds remain. The park is free to walk around and offers many interesting sights and viewpoints including over Hooe Lake. The 19th-century castle is a particularly pretty sight and marks the end of the West Devon Way.

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This dramatic 17th-century fortress was built to defend the coastline from the Dutch. The fortress, owned and managed by English Heritage, is still used by the military today.

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Mount Batten is a rocky peninsula in the northeast corner of Plymouth Sound. Mount Batten Artillery Tower, which was built in the 1650s, guards the southern approach to the harbour and was used as a defensive outpost as recently as WWII.

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The Royal Citadel in Plymouth, Devon, England, was built in the late 1660s to the design of Sir Bernard de Gomme. It is at the eastern end of Plymouth Hoe overlooking Plymouth Sound, and encompasses the site of the earlier fort that had been built in the time of Sir Francis Drake.

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Frequently Asked Questions

What kind of historical structures can I expect to find around St. John?

The St. John area is rich in historical fortifications and ruins, reflecting its strategic maritime history. You'll find structures built for defense, such as 17th-century fortresses and artillery towers, alongside historical estates and castle ruins. These sites offer insights into centuries of historical significance.

Are there any castles around St. John that are particularly family-friendly?

Yes, Radford Castle and Hooe Lake Shipwreck is located within Radford Park, a beautiful green space that is considered family-friendly. It offers plenty of room to explore and enjoy the outdoors while discovering the 19th-century castle ruins and viewpoints over Hooe Lake.

Can I visit all the historical castles and fortifications around St. John?

While many sites are accessible, some have specific visiting conditions. For example, The Royal Citadel, Plymouth, a dramatic 17th-century fortress, is still used by the military and cannot be visited internally. Trematon Castle is open on specific days, typically Thursday, Friday, and Saturday, though you can get a good view from the footpath at other times.

What natural features can I see near the castles in St. John?

Many of the historical sites around St. John are situated in coastal environments, offering stunning views of the sea. For instance, Mount Batten Tower is on a rocky peninsula overlooking Plymouth Sound. Radford Castle and Hooe Lake Shipwreck provides viewpoints over Hooe Lake within Radford Park, a lovely green space.

What outdoor activities can I do near these castles?

The area around St. John offers various outdoor activities. You can find numerous cycling routes, including road cycling, mountain biking, and general touring bicycle routes. These routes often pass by or are near historical sites and offer scenic views. For more details, explore the Road Cycling Routes around St. John, MTB Trails around St. John, and Cycling around St. John guides.

Are there any specific viewpoints to enjoy the scenery around the castles?

Yes, several castles and historical sites offer excellent viewpoints. Radford Castle and Hooe Lake Shipwreck provides interesting sights and viewpoints over Hooe Lake. The Royal Citadel, Plymouth, is situated at the eastern end of Plymouth Hoe overlooking Plymouth Sound, offering dramatic coastal views. Mount Batten Tower also provides great views from its rocky peninsula.

What is the historical significance of <a href="https://www.komoot.com/highlight/222121" target="_blank" rel="noopener">The Royal Citadel, Plymouth</a>?

The Royal Citadel, Plymouth is a dramatic 17th-century fortress built in the late 1660s to defend the coastline, specifically from the Dutch. It was designed by Sir Bernard de Gomme and encompasses the site of an earlier fort. It remains a military facility today, highlighting its enduring strategic importance.

What can I learn about at <a href="https://www.komoot.com/highlight/806512" target="_blank" rel="noopener">Radford Castle and Hooe Lake Shipwreck</a>?

At Radford Castle and Hooe Lake Shipwreck, you can explore the ruins of a 19th-century castle set within Radford Park. This park was once home to a grand Elizabethan property, Radford House, which hosted notable figures like Sir Walter Raleigh and Sir Francis Drake. The site offers a glimpse into the area's aristocratic past and its connection to maritime history, with views over Hooe Lake.

Is there a castle around St. John that was built on an even older site?

Yes, Trematon Castle is a notable example. It features a 12th-century keep and was built on the site of a Roman fort, showcasing layers of history from different eras. Its Motte and Bailey style construction further emphasizes its ancient origins.

What is the historical context of <a href="https://www.komoot.com/highlight/842321" target="_blank" rel="noopener">Mount Batten Tower</a>?

Mount Batten Tower is an artillery tower built in the 1650s. Located on a rocky peninsula, it was designed to guard the southern approach to the harbor. Its strategic importance continued through centuries, as it was still used as a defensive outpost as recently as World War II.

What do visitors enjoy most about the castles around St. John?

Visitors appreciate the blend of historical significance and scenic beauty. Many enjoy exploring the ancient ruins and fortifications while taking in the dramatic coastal views. The opportunity to walk through historical parks, like Radford Park, and discover sites that tell stories of defense and maritime heritage is a major draw.

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