Last year, Triodos Bank welcomed its newest office, a green-roofed circular building that raises the bar for sustainable architecture. Designed by Amsterdam-based firm RAU Architects in collaboration with Dutch interior design firm Ex Interiors, the new Triodos Bank office in Zeist was envisioned as a wooden “cathedral” to nature with lofty, light-filled interiors that feature exposed wood, organic forms and full-height glazing throughout.