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12 March 2026

Tower Transformation: Lifting the Roof of a 1908 Monument

If you’re drawn to places where history and design meet, this Tower Transformation will capture your imagination. At Watertower Duin & Bosch, the entire roof of a 1908 national monument was lifted so windows could be added for extra daylight—turning the former water reservoir into a luxurious private suite with a 360° panorama at 33 meters high. In this behind-the-scenes look, you’ll learn why the roof was lifted, how such work is typically executed, and what this engineering feat means for your stay.

From Utility to Sky‑High Sanctuary

The story begins in 1904, when a hospital complex rose on the Duin & Bosch grounds in North Holland. To supply it, a dedicated drinking water facility was built: dunewater was pumped from deep pits, filtered and de‑ironized, stored in a water basin, and then pumped into the Watertower, completed in 1908. By the late 1970s, the buildings were connected to the regional water network and the tower’s original function ended.

Years later, restoration plans reimagined this historic structure as a unique boutique hotel with one room inside the original reservoir. Today, Watertower Duin & Bosch is a national monument reborn—a private, design-forward suite with a breathtaking 360° view and a bedroom on a “floating loft” that seems to hover within the former water tank.

For a quick visual impression of the suite and its design details, explore: Take a look at the suite.

Why Lift the Roof? More Daylight, More Life

Monuments often have few openings, especially where structural integrity once mattered more than interior light. Inside a former water reservoir, the priority was watertightness and storage—not sunlit comfort. During the restoration, the complete roof was lifted and windows were added to bring in abundant daylight and reveal the tower’s spectacular surroundings.

The result is a luminous, circular space where heritage and hospitality meet: an intimate suite that feels both cozy and expansive, crowned by sky and ringed with views.

What does “lifting the roof” involve? (Short answer)

In heritage projects, lifting a roof typically means:

At Watertower Duin & Bosch, this approach enabled new windows that flood the original reservoir with daylight—without losing the character that makes the tower special.

Inside the Transformed Reservoir: Design Meets Heritage

Step into a high‑end design suite of 20 square meters, crafted with sustainable materials and an industrial‑modern atmosphere. The centerpiece is the bedroom on a floating loft featuring a kingsize, round bed—a dramatic perch for watching sunsets or daybreak over the treetops.

Downstairs, thoughtful comforts complete the experience:

For a romantic angle on the same features, see the Bridal suite Watertoren Duin & Bosch.

Light, Views, and the 360° Panorama

Thanks to the lifted roof and added windows, the suite frames the landscape in every direction:

It’s easy to settle in and let the scene change with the weather and the hour—from golden dusk to first light.

What This Engineering Feat Means for Your Stay

The lifted roof did more than brighten a historic interior; it unlocked an experience:

The tower’s height (33 meters) turns everyday rituals into moments to savor: a quiet soak with treetop views, coffee at sunrise, or a glass of bubbles as the sky fades over the dunes.

For inspiration beyond the tower, browse So much to discover.

Practical Tips to Experience the Tower Transformation

Make the most of your sky‑high stay with these simple, guest‑tested ideas:

  1. Pack light and wear comfortable shoes. You’ll ascend via a dramatic spiral staircase (and short Swedish steps), which is part of the adventure.
  2. Time your arrival. Reception‑free check‑in starts at 3:00 PM; plan to linger with a late check‑out until 12:00 PM.
  3. Chase the best light. Sunset and sunrise are unforgettable from the floating loft—draw the curtains early so morning light can greet you.
  4. Use the included two bicycles. The immediate area, Castricum village, and the dunes are perfect for leisurely rides.
  5. Explore the Noordhollands Dune Reserve. You’ll receive a dune map by email for your visit; consider a stop at the De Hoep visitor centre in Castricum.
  6. Savor breakfast from DOK. It’s included and delivered up to the hotel door—perfect for a relaxed start.
  7. Honeymooners: consider the Bridal suite angle for added inspiration.
  8. Thinking of a longer escape? Stay another night for less—book two nights and you can temporarily get the second night with 50% off.
  9. Settle in with comforts. The Quooker, coffee machine, Wi‑Fi, sound system, and climate control make cocooning effortless.
  10. Plan day trips. Haarlem, Alkmaar, and Amsterdam offer museums, markets, and dining—including a recommended 1* Michelin restaurant nearby.

FAQs: Tower Transformation at a Glance

Explore More of Watertower Duin & Bosch

Conclusion: Book Your Sky‑High Stay

A century‑old water reservoir, a lifted roof, new windows, and design‑led comfort—this Tower Transformation delivers a one‑of‑a‑kind stay in a 1908 monument, with views that unfold in every direction. Ready to experience it for yourself?

Tip: Want to linger? Book two nights and temporarily get the second night with 50% off—the perfect reason to slow down and enjoy every angle of the view.