Create a detailed architectural sketch of a modern, multi-story building. The structure should have clean, geometric lines, with a prominent triangular shape on the upper floors. The design incorporates large glass windows and steel beams, suggesting a sleek, contemporary style. The scene should show people gathered outside the building, with trees, potted plants, and steps leading up to the entrance. The sketch should be in black and white, with a textured paper background, evoking an architectural drawing style with fine line work and shading for depth.