National Museum of African American History and Culture, modern architecture, grand entrance, bronze-colored exterior walls, angular lines, triangular shapes, natural light pouring in through skylights, high ceilings, spacious interior, exhibits on slavery, segregation, Civil Rights Movement, colorful artwork, African-inspired patterns, marble floors, curved staircases, panoramic view of the National Mall, Washington D.C. background, afternoon sunlight, warm ambient lighting, 3/4 composition, detailed textures.