Minimal black line icons for architecture, design, and city planning

A clean white background displays four separate black outline icons arranged in a two-by-two grid. A rolled floor plan, drafting compass, classical column, and modern city skyline suggest architecture, construction, design, and urban development. The simple vector style uses bold lines and generous negative space, making the set easy to isolate for web graphics, presentations, or branding systems. Each symbol is rendered with a crisp, uncluttered silhouette that feels technical and contemporary. The composition is balanced and symmetrical, with no color, shadow, or texture to distract from the forms. Because the icons are distinct yet related, they work well as a concept set for planning, engineering, real estate, and civic design topics.