Rubjerg Knude Lighthouse was built in 1900 as a fixed point in a shifting landscape. Over the following century, the advancing dunes swallowed the surrounding buildings and threatened the tower itself — until in 2019 the lighthouse was moved 70 metres inland by mason Kjeld Pedersen, a feat of precise local craftsmanship that secured its survival. The move, combined with decades of weathering and use, left the interior stair beyond repair. Earlier, in 2016, JAJA Architects had reactivated the lighthouse with a temporary steel stair and kaleidoscopic lantern — proving the site's enduring cultural relevance, and leaving behind a steel structure that would become the material foundation of what came next. The Danish Nature Agency (Naturstyrelsen Vendsyssel), supported by Realdania, initiated an invited competition for a permanent new stair and restored lantern.

Our proposal, Tiden & Sandet (Of Time & Sand), takes the deep geological narrative of the site as its point of departure. The lighthouse is understood as a vertical extension of the cliff — a human-made continuation of the forces that have shaped this coastal landscape across millions of years. Stone and sand are the same matter in different states: the new stair is formed from the same minerals — quartz, feldspar, mica — that compose the cliff itself, and the glass of the restored lantern is melted sand. The stair becomes an architectural echo of geology, where material returns to itself in refined form.

The stair is a true cantilever construction — The result is a self-supporting spiral with no central column, no intermediate structure, and no complex jointing — a system proven in Danish lighthouse stairs for over three centuries, requiring minimal maintenance and capable of standing for hundreds of years. Stone chosen from already-quarried and stockpiled Nordic sources requires minimal further processing and has an extremely low CO₂ footprint. Its patina deepens with use and weathering; the stair will be more beautiful in a century than on the day it is built.

Viable existing steel from JAJA's construction is reused and worked locally. Cut, bent, and welded using classical smithing techniques — without remelting, which would consume large amounts of energy and erase the material's history — the steel is transformed into benches in the entrance hall, balustrades along the stair, a new folded entrance stair that accommodates the shifting sand level, and a sheltering canopy at the doorway. The material lineage of the lighthouse — chalk, cliff, masonry, JAJA's steel — is not erased but carried forward, layer by layer. The combined climate impact of natural stone and reclaimed steel is up to 90% lower than a conventional concrete or steel construction.

Inside the lighthouse a new spatial rhythm of ascent and pause emerges, designed to be welcoming and legible to all visitors regardless of mobility. The entrance hall — generous, light-filled, with a ceiling height of 4.6 metres — allows visitors to inhabit the lighthouse's layered history without necessarily climbing: historical drawings, geological sections, and the recovered lens displayed on the wall, with benches of reclaimed steel offering a place to rest and look upward through the full height of the tower. A new circular window opens the original curved masonry opening that once connected the tower to the lighthouse keeper's quarters, giving light and a framed view out across the dunes to visitors who choose not to climb. Widened landings at every level create space to pause, step aside, and look out through reopened windows. The former fog horn opening is reinstated as a sheltered viewing alcove with panoramic views towards the North Sea. At the top, a new skylight in the lantern's crown draws light down through every level, so the full vertical sweep of the tower can be sensed from the moment of arrival. The lighthouse is experienced as one whole — from the cliff to the horizon.

Tiden & Sandet gives the lighthouse a new cycle, rooted in the cliff and in human community. A lighthouse for the forces of nature. A lighthouse for history. A lighthouse for everyone.