The space in question is the Sky Lounge at Swiss multinational Schindler's recently completed campus in Ebikon, just outside Lucerne, courtesy of architects Burckhardt+Partner; and the boulder a seven-tonne mass of granite, sourced from the Bernese Alps, and sunk into the floor to serve as a unique, texturally expressive bar. How many men does it take to get a boulder into a top floor? No, this isn't the first half of a joke. It's a genuine question. Or at least it was for Zurich-based interior architect Mia Kepenek, whose creative vision for a recently completed top-floor corporate lounge could be described as displaying an enviable chutzpah and an unenviable set of logistics in equal measure. The space in question is the Sky Lounge at Swiss multinational Schindler's recently completed campus in Ebikon, just outside Lucerne, courtesy of architects Burckhardt+Partner; and the boulder a seven-tonne mass of granite, sourced from the Bernese Alps, and sunk into the floor to serve as a unique, texturally expressive bar. Rhetorically speaking, the message is clear: Swiss heft and stability. The rest of the project, meanwhile, materially rich yet never de trop, conveys through its design scheme two further Schindler values that neatly dovetail with those of its home nation – quality and precision. The brief Kepenek received was to create a comfortable and versatile space, where the company – one of the world’s leading manufacturers of elevators and escalators – could host potential clients and architects to discuss projects, sign contracts and, of course, enjoy some fine hospitality. The space, therefore, needed to be flexible, functioning at turns as a space for business and entertaining, while also featuring all the latest AV and other digital technologies required to present Schindler’s innovation-led, problem-solving offering. What’s more, it had to play host to the organisation’s board meetings. Beyond the interior scheme’s eloquent materiality – played out in wood, metal and glass – and the considered dialogue between its various furniture elements, is a cleverly deployed architectural feature that helps animate the space as a whole: a wall of smoked glass divides the main room into a lounge on one side and a dining area on the other. Its constituent panels, however, can be pivoted open to create an impressive, continuous volume. Their partially mirrored finish on both sides, meanwhile, ensures a maximisation of the sub-spaces, optically speaking, when the panels are closed. Spatial flexibility means programmatic flexibility. Other surfaces also play a dynamic role at the Schindler Sky Lounge. Demarcating the seating area, for example, is a wooden parquet floor that comes courtesy of go-to Swiss manufacturer. Laid in a herringbone formation, the high-end surface provides both a literal and a visual warmth. ‘I wanted to mark out the area, to make it a zone if you will,’ explains Kepenek. ‘The wooden floor functions as a “soft” surface in contrast to the polished stone surface around it, in the same way a large textile rug would. But it delivers much more robustness and longevity, of course.’ The wooden flooring should act as a kind of architectural linchpin at Schindler – holding, in its central position, the various other materials that serve to articulate the space, such as a brushed-metal-panelled wall, in a harmonious tension. But what about the boulder? If you’re still wondering, it was craned through a hole in the roof. Easy when you know how. Text by Simon Kean-Cowell, Architonic.