Federalist architecture, grandiose building, neoclassical style, ornate columns, arched windows, domed roof, intricately carved stone walls, symmetrical facade, majestic entrance, sweeping staircases, richly decorated interiors, marble floors, high ceilings, elegant chandeliers, patriotic atmosphere, American flag waving, sunny day, clear blue sky, urban setting, capital city, Washington D.C., National Mall, autumn leaves.