Historic Washington D.C., architectural tour, daytime, sunny, blue sky, white clouds, guided group, professional camera, wide-angle lens, high dynamic range, walking, National Mall, iconic landmarks, neoclassical buildings, marble columns, grand staircases, ornate details, United States Capitol Building, Library of Congress, Supreme Court, Washington Monument, World War II Memorial, Lincoln Memorial, Reflecting Pool, surrounding trees, vibrant greenery, tourists taking photos, enthusiastic guide explaining historical significance, soft natural light, cinematic composition.