Amsterdam's former Palace of Justice, built in 1665 on the Prinsengracht canal, carried rather more weight than most hotel conversion projects typically inherit: a building where verdicts were delivered, sentences handed down, and lives irrevocably changed. That the site now houses Rosewood Amsterdam, opened in 2025, makes it not only one of the most historically charged hotels in Europe but also, by city decree, the last monumental building in Amsterdam permitted to become a hotel at all. Studio Piet Boon's interiors work carefully within those stakes. Original courtrooms and cellblocks survive as spatial evidence of the building's past life, while 134 guestrooms show the studio's characteristic palette of warm greys, burnished brass, and deep patinated surfaces — headboards upholstered in textured panels backlit against taupe walls, leather loungers paired with gilt reading lamps, the whole effect closer to a private Amsterdam townhouse than to international hotel formula. The bar is finished in deep forest green with a veined dark marble counter and amber leather stools, pendant lights in geometric brass-framed forms casting a warm, low glow. Outside, three internal courtyards were landscaped by Piet Oudolf, whose signature loose planting softens the severe neoclassical brick facades that face the canal. Supervising architect Kentie & Partners oversaw the structural conversion, preserving the UNESCO-listed Grachtengordel building's integrity while threading the full infrastructure of a luxury hotel through three and a half centuries of civic history.