11th September 2026

 

 

Did you know that some of Hertfordshire's most fascinating historic places only open their doors to the public once a year? Heritage Open Days is your chance to go behind the scenes, explore hidden gems and uncover the stories that have shaped our county for generations. 

From Norman churches and medieval castles to heritage walks and exclusive archive tours, there are plenty of opportunities to step back in time and discover something new. Best of all, events are completely free, making it easy to enjoy a memorable day out while celebrating the rich history and heritage that make Hertfordshire so special


 

 

 

Berkhamsted Castle Guided Tours

Considered the best remaining example of a motte and bailey castle in the UK, Berkhamsted Castle Trust are offering free guided tours of the site which was originally built as a timber structure by William the Conqueror’s half-brother Robert of Mortain. The castle has a rich history which the volunteers will bring to life on the tours on the 13th, 18th and 19th of September, as it has over 950 years of stories. Did you know that it was here that the Anglo-Saxons had surrendered to the aforementioned William, Duke of Normandy in 1066, thus becoming “The Conqueror”?

St Albans Clock Tower

 

Perched above St Albans' historic Market Place, the St Albans Clock Tower is one of the city's most recognisable landmarks and the only surviving medieval town belfry in England. On 12 and 13 September, you can enjoy free entry and climb the tower's 93 spiral steps for stunning views across the city and surrounding countryside. Along the way, discover over 600 years of history, from the medieval bell that still chimes today to the Victorian clock mechanism that keeps time at the heart of St Albans. The tower was originally built by townspeople as a symbol of independence and civic pride, and its fascinating stories continue to captivate visitors today. Whether you're a history enthusiast, a keen photographer or simply looking for a unique way to experience the city, this iconic landmark is well worth a visit during the Heritage Open Days weekend.

 

 

Hertford Castle Heritage Day

Step back in time with Hertford Castle for the ever-popular Heritage Open Day on Sunday 20th of September. This free event transforms the Castle grounds into a buzzing medieval scene, complete with re-enactments, falconry displays, live storytelling and even Viking battles. You’ll also get the rare chance to explore inside the Grade I listed Gatehouse, where themed rooms reveal centuries of fascinating history. Perfect for families and history buffs alike, it’s a fun-filled day that brings Hertfordshire’s heritage to life.

Place House Hall Open Day

Place House Hall Open Day in Ware is on Sunday 12 September  and is a delightful slice of living history right in Hertfordshire. This Grade I medieval hall opens its doors from 11:00 am to 3:00 pm, offering a charming mix of education and fun with a historic talk by Miss Dorothy Abel Smith and hands-on heritage activities like Tudor dress-up, 17th-century handwriting, wooden joint puzzles, and coat-of-arms designing. With free entry, refreshments on sale, and no need to pre-book, it’s the perfect accessible outing for families and history buffs alike

Verulamium Museum

 

Built on the site of one of Britain's largest Roman cities, Verulamium Museum brings the story of Roman Hertfordshire vividly to life. Enjoy free entry and explore an impressive collection of Roman artefacts, including intricate mosaics, wall paintings, jewellery and everyday objects uncovered from the ancient city of Verulamium. Wander through galleries packed with fascinating discoveries and uncover what daily life was like nearly 2,000 years ago. The museum is home to some of the finest Roman mosaics and archaeological treasures in the country, making it a must-visit for history lovers of all ages. Whether you're passionate about archaeology or simply curious about the city's remarkable past, a visit to Verulamium Museum offers a fascinating glimpse into St Albans' Roman roots.

 

 

Rare books archives

 

Behind the scenes of Hertfordshire Archives

on Thursday 17 September go beyond the public reading rooms and explore the hidden collections at Hertfordshire Archives and Local Studies. Visitors can discover how precious historical documents are preserved and gain exclusive access to some of the county's most fascinating records and treasures.

From centuries-old manuscripts to unique records of local life, the archives safeguard Hertfordshire's collective memory. This behind-the-scenes experience offers a rare insight into the work that keeps the county's history alive for future generations.

 

 

Frogmore Paper Mill 

The world's oldest mechanised paper mill and the birthplace of paper's industrial revolution opens its doors on the 19th of September this year. Nestled on the banks of the River Gade in Apsley, this remarkable site played a pioneering role in transforming the way paper was produced and helped shape an industry that changed the world. Explore the historic machinery, learn about centuries of papermaking innovation and uncover the stories of the people who worked here. As the home of Britain's first successful mechanised paper-making machine, Frogmore offers a unique glimpse into Hertfordshire's rich industrial heritage. Its Heritage Open Days events provide a rare opportunity to experience this living piece of history and celebrate the county's legacy of innovation and enterprise.

 

 

Royston Parish Church

Standing proudly at the heart of the town, Royston Parish Church has been a focal point of community life for centuries. With origins dating back to the medieval period, the church is home to beautiful architecture, historic memorials and fascinating stories that reflect Royston's rich past. Visitors can admire its impressive interior while discovering the important role the church has played in the town's development over the generations. Its connection to the historic crossroads of ancient routes adds another layer to the story of this unique Hertfordshire market town. During Heritage Open Days, it's the perfect place to pause, explore and uncover another chapter of Hertfordshire's remarkable heritage.

This feels consistent with the tone of your other entries: friendly, accessible, focused on discovery rather than historical detail overload.

 

 

Bushey Rose Garden Guided Tours

Join a guided tour of the beautiful Bushey Rose Garden and discover the history behind one of Hertfordshire's most cherished green spaces. Originally created in the early 20th century, the garden has been lovingly restored and cared for by volunteers, ensuring it remains a treasured part of the local community. As you stroll among the colourful flower beds and historic features, you'll hear fascinating stories about the garden's past and the people who helped shape it. The tours on the 19th of September offer a chance to learn about Bushey's heritage from a different perspective, where history, horticulture and community come together. It's a delightful opportunity to uncover a hidden gem and enjoy a moment of tranquillity during Heritage Open Days.

 

 

Roman Fields and Boxmoor House

Discover layers of history at Roman Fields, where the remains of a Roman settlement sit alongside the story of the historic Boxmoor House. Archaeological excavations uncovered evidence of a thriving community dating from the 1st to the 4th century, offering a fascinating glimpse into life in Roman Hertfordshire. on the 12 th of September you can also learn about Boxmoor House, built in the Victorian era by surgeon Thomas Davis, which later served as a convalescent home for First World War soldiers and a children's home. From ancient archaeology to Victorian innovation and 20th-century social history, this unique site brings together nearly 2,000 years of Hertfordshire's heritage in one remarkable location.

 

 

A Tale of Two Histories: Pump House Watford

Discover the fascinating story of Pump House Watford, a landmark that has enjoyed two very different lives. Originally built as a Victorian pumping station, the building played an important role in supporting the town's growth before being transformed into the vibrant arts and cultural venue visitors know today. This guided tour takes you behind the scenes to uncover both its industrial heritage and its creative reinvention, revealing how the past has been preserved while embracing a new purpose. It's a wonderful opportunity to explore a unique piece of Hertfordshire history where engineering, community and culture come together.

 

 

Panshanger Park

Discover the fascinating story of Panshanger Park, a landscape shaped by centuries of history, from its days as the grand estate of the influential Cowper family to its transformation into one of Hertfordshire's most treasured nature reserves. Guided walks, talks and tours will take visitors through the park's rich past, uncovering stories of aristocratic life, landscape design and the people who once called this remarkable estate home. Along the way, you'll learn about the park's historic buildings, its famous oak trees and the ambitious restoration project that has helped preserve this special place for future generations. Today, history and nature sit side by side, offering visitors the chance to explore beautiful countryside while discovering the heritage hidden within the landscape. Whether you're a keen historian, nature lover or simply looking for a great day out, Panshanger Park provides a fascinating glimpse into the evolving story of Hertfordshire's past.

 

 

A Behind-the-Scenes Look at Childhood Cinema Nostalgia with the British Film Institute

Take a trip down memory lane with this special A Behind-the-Scenes Look at Childhood Cinema Nostalgia with the BFI event at Hemel Hempstead Library. Hosted by the British Film Institute (BFI), this fascinating talk offers a unique glimpse into some of Britain's most beloved children's films and the remarkable archives that help preserve them for future generations. Visitors will discover the stories behind the films that shaped childhoods, while exploring the important work involved in protecting the nation's screen heritage.

In a county renowned for its film and television connections, from world-class studios to iconic filming locations, this event is a wonderful reminder that preserving our cultural history goes far beyond historic buildings and ancient artefacts. It's an opportunity to celebrate the films, memories and shared experiences that have become part of Britain's story, making it a must for movie lovers, nostalgia seekers and anyone interested in the magic of the big screen.

 

 

Plan Your Heritage Adventure

Whether you're fascinated by medieval history, historic architecture, local stories or hidden treasures, Heritage Open Days is the perfect opportunity to explore a different side of Hertfordshire. From Norman churches and royal castles to archives, parks and heritage walks, these experiences showcase why history and heritage remain one of the county's greatest assets, helping to create the distinctive sense of place that makes Hertfordshire such a rewarding destination to visit.