Chepstow Castle: The Oldest Surviving Post-Roman Stone Castle In Britain

Chepstow Castle, perched on a limestone cliff overlooking the River Wye in Wales, is the oldest surviving stone castle in Britain.

This impressive structure was built in 1067 by Norman lord William FitzOsbern.

It has seen many changes over the centuries and remains a popular tourist destination today.

View of the buildings of the Lower Bailey & Wye River from the Upper Bailey
View of the buildings of the Lower Bailey & Wye River from the Upper Bailey

Origins and Early History

Chepstow Castle’s construction began in 1067, soon after William the Conqueror’s victory at Hastings.

Commissioned by the Norman lord William FitzOsbern, the castle was initially known as Striguil, derived from the Welsh term ystraigl, meaning “river bend.”

FitzOsbern chose the site because of its strategic location over the River Wye, a vital communication artery between England and Wales.

The Great Tower, finished around 1090, was built from stone, a step up from the wooden castles of the time.

Some of the stone was even reused from Roman ruins nearby.

Expanding and Strengthening

By the late 12th century, Chepstow Castle underwent significant expansion under William Marshal, Earl of Pembroke.

Twelfth century wooden door of the gatehouse
Twelfth-century wooden door of the gatehouse

Marshal, an experienced military leader with a background in French fortifications and Crusades, modernized the castle’s defenses.

He added a new gatehouse, reinforced the defenses with round towers, and made the castle more modern.

View of the Outer Gatehouse, the main entrance to the castle
View of the Outer Gatehouse, the main entrance to the castle

His sons continued the work, adding more to the Great Tower and the castle’s defenses.

View of the Lower Bailey from the Outer Gatehouse tower
View of the Lower Bailey from the Outer Gatehouse tower

In the 13th century, Roger Bigod, 5th Earl of Norfolk, inherited the castle.

He built Marten’s Tower and a new range of buildings in the Lower Bailey, along with the town wall known as the “Port Wall.”

These changes turned the castle into a more impressive residence and fortified it further.

Decline and Transformation

By the 14th century, Chepstow Castle’s defensive significance began to wane.

The end of the Welsh wars and changes in warfare made the castle less strategic.

View of the Chamber block from the Lower Bailey
View of the Chamber block from the Lower Bailey

Although it was briefly garrisoned during the rebellion of Owain Glyndŵr in 1403, its size and location made it less practical for defense.

View of the Barbican at the upper end of the castle from near the Corner Tower
View of the Barbican at the upper end of the castle from near the Corner Tower

In the 15th century, the castle was remodeled as a grand home by Sir Charles Somerset.

View of the gallery next to the Great Hall which separates the upper and middle baileys
View of the gallery next to the Great Hall which separates the upper and middle baileys

Over the centuries, it was used for various purposes, including as a farmyard and a glass factory.

The castle from the Outer Gatehouse
The castle from the Outer Gatehouse

A Historical Tourist Attraction

By the late 18th century, Chepstow Castle began attracting tourists.

The picturesque ruins became part of the “Wye tour,” and famous artists like J.M.W. Turner painted the castle.

Osbern's Great Tower viewed from the Middle Bailey
Osbern’s Great Tower viewed from the Middle Bailey

In the 20th century, the castle’s historical and architectural significance was recognized.

After many conservation efforts, the castle was restored.

Interior of the Great Tower at Chepstow Castle
Interior of the Great Tower at Chepstow Castle

In 1950, Chepstow Castle was designated a Grade I listed building, and in 1984, it came under the care of Cadw, the Welsh government’s heritage body.

Interior of the Great Tower at Chepstow Castle
Interior of the Great Tower at Chepstow Castle

Today, Chepstow Castle is managed by Cadw, the Welsh heritage body.

Exterior of the Marten's Tower
Exterior of the Marten’s Tower

It’s a popular destination for visitors, offering a glimpse into medieval life through its well-preserved buildings and regular events.

Interior of the Marten's Tower
Interior of the Marten’s Tower

Highlights include the Great Hall and the stunning views from the cliffside.

View of some of the detail from the top of the Marten's Tower
View of some of the detail from the top of the Marten’s Tower

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