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Discover The Willis Building in Ipswich, a Norman Foster masterpiece with a glass facade and grass roof. Visit nearby Lavenham Guildhall and Sutton Hoo.
The Willis Building in Ipswich, Suffolk, is a striking example of modern architecture, designed by Sir Norman Foster and opened in 1975. Originally built as the headquarters for Willis Faber & Dumas, this Grade I listed “groundscraper” is celebrated for its innovative open-plan design and energy-efficient features, such as its insulating grass roof. Its sleek, dark glass facade curves to fit the medieval street pattern, reflecting the town’s historic charm while embodying a futuristic vision, earning accolades from architects like Zaha Hadid for its timeless influence.
Inside, the building revolutionized office culture with escalators, a glass ceiling flooding spaces with natural light, and egalitarian amenities like a roof garden and a former swimming pool, now covered. The Willis Building’s raised floors anticipated the tech boom, allowing seamless computer integration. Though not typically open to the public, its exterior draws visitors, especially during Heritage Open Days, when access to the rooftop restaurant offers a unique perspective. The building remains a workplace for WTW (Willis Towers Watson), blending functionality with architectural legacy.
Nearby attractions include Lavenham Guildhall, a 16th-century timber-framed marvel, 15 miles away, and the historic Christchurch Mansion in Ipswich, a short walk from the Willis Building. Sutton Hoo’s Anglo-Saxon burial mounds are a 30-minute drive. The Willis Building’s bold design, historic significance, and proximity to Suffolk’s treasures make it a must-see for architecture enthusiasts exploring East Anglia.
The building’s 890 dark glass panels create a mesmerizing mirror of Ipswich’s streets, shifting with light and blending medieval charm with futuristic design.
An innovative insulating grass roof, rare for 1970s offices, offers a green oasis and panoramic views during rare open days, showcasing eco-conscious design.
The pioneering open-plan layout, with yellow walls and green floors mimicking nature, revolutionized office spaces, fostering community and flexibility.
Designed by a young Norman Foster, this “groundscraper” curves to fit medieval streets, earning global praise as a timeless architectural landmark.
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Curious about The Willis Building? We've compiled answers to the most frequently asked questions to help you uncover the highlights and visitor essentials.
The Willis Building is renowned for its modernist design by Norman Foster, its reflective glass exterior, and pioneering open-plan office layout, earning Grade I status in 1991.
Opened on June 2, 1975, as the Willis Faber & Dumas headquarters, it was one of Foster’s first major projects. Its innovative design influenced office architecture, and it became Grade I listed in 1991 for its historical and architectural significance.
The building is a private office for WTW, with no regular tours, but Heritage Open Days in September may offer limited access, including the rooftop. Check www.heritageopendays.org.uk.
Nearby Ipswich town center offers cafés, shops, and public toilets. No facilities are available at the building itself, as it’s a private office.
Yes, Ipswich’s historic center, with St Mary-le-Tower Church and the Ancient House, is steps away, offering shops, pubs, and cultural sites.
Make your trip unforgettable by exploring these nearby attractions during your visit.