Kalø Slotsruin Besøgs Adgang, Danish Building Design Photos, MAP Architects Jutland

Kalø Tower Visitor Access

17 October 2021

Kalø Tower Visitor Access Design

Design: MAP Architects

Location: Kalø Tower, Molsvej 31, Rønde – north east of Århus, Jutland, Denmark

Photos by Bjørn Pierri Enevoldsen

Kalø Slotsruin Besøgs Adgang

The Kalø Tower Visitor Access project allows access to one of Denmark’s archaeological gems, while offering and intricate spatial experience. Previously inaccessible, the visitor can enter and climb the main space of the tower, perceive the archaeological layers and view the landscape. Culture and nature, at a small and large scale, are united by this spiral access.

This 700 year-old medieval ruin is key in Danish history. Built on an isthmus projecting from the coast, it is a local reference, a social anchor and major national tourist attraction in the northern part of the Jutland peninsula.

Three stories high and two stories deep, the brick tower has been empty of its internal structure for centuries, with a single small opening at its base as the only source of visual access to the interior. The project, a zig-zagging staircase, allows the visitor to enter, experience the archaeological layers at hand’s reach, walk upwards to access façade openings and balconies, while offering at each landing the opportunity to view the magnificent landscapes surrounding this historic site.

While being minimal in its detail, the staircase creates an intricate space within the cubic emptiness, culminating at its top open to the sky.

The desire to allow the visitor to “touch” the archaeological layers of the tower, and simultaneously “leave” the ruin and “levitate” in the landscape was pivotal. The architectural gesture is the geometric result of connecting openings and landings, while aiming to offer the richness of the archaeological site and the surrounding landscape. Being an archaeological site, the challenges of supporting the structure given the few anchor points allowed was substantial.

Characteristic of MAP Architects works, narrative and technology and environment are merged to solve extreme challenges. Part of our work methodology is “living” on site for a period of time, to comprehend its potentials and challenges. Technologically speaking, an in-house constructed portable 3D scanner was a decisive in permitting a digital 3D of every single brick, reducing tolerances to a minimum while allowing for a design that would “fit” the site.
By the constant shift of landing size, step and rise ratios, the design of a continuous handrail without height variations was achieved, greatly reducing the formal and visual clutter.

What otherwise seems like a simple staircase, it has bound landscape and archelogy in an incredibly tight space, increasing the visitor experience and doubling visitor numbers overnight.

Kalø Tower Visitor Access, Rønde, Jutland – Building Information

Name of work in english: Kalø Tower Visitor Access
Name of work in original language: Kalø Slotsruin Besøgs Adgang
Work Address: Molsvej 31,
Work country: Denmark
Work city: 8410 Rønde

Year of design: 2013
Construction – Groundbreaking year: 2015
Construction year of completion: 2016
Client name: Naturstyrelsen/Danish Ministry of the Environment
Client web: www.naturstyrelsen.dk
Client type: Public

Site area: Tower: 145 m2. Parking and recreation area: 2654 m2
Total gross floor area: Stair in tower: 38 m2. Parking and recreation area: 2654 m2

Cost:
Parking and recreation area: 1.864.908,- DKKR = 108.793,- EUR. Cost pr. m2: 6.590,- EUR
Stair in Tower: 1.864.908,- DKKR = 250.381,- EUR. Cost pr. m2: 305,- EUR
Total: 2.675.220,- DKKR = 359.174,- EUR. Cost pr. m2: 301,- EUR

Official web of work: Kalø Slotsruin visitor access

Kalø Slotsruin Besøgs Adgang Konstruktion

Construction – Materials and structure:

The Staircase is based on a steel frame construction, supported on the ruin at only four points to minimize damage on the historical monument. The sides and underside are clad in ash wood, specially treated with heat to maximize durability to up to 60 years without paint.

The stairs and handrail are metal, painted in matt black to ensure maximum durability, since the site is at the coast and therefore under tough weather conditions. The stair was constructed in 7 large pieces in a workshop normally used for off-shore elements, and mounted in the tower ruin by crane. The building site was extremely challenging since the whole area is a cultural heritage and strictly protected, therefore, no damage to the tower was allowed and the process was closely monitored.

Work address: MAP Architects, Bådehavnsgade 42, 2450 Copenhagen, Denmark +4522446415

Photos: Bjørn Pierri Enevoldsen

Kalø Tower Visitor Access Building, Jutland images / information from MAP Architects

Location: Kalø Tower, Molsvej 31, Rønde, Jylland, Danmark, northern Europe

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