Ключевые слова: 9, 50, architecture, block, blue, cabinet, canada, canadian, celebration, centre, city, clock, colorful, colors, commons, dark, festive, fifty, flag, front, glow, gothic, hill, history, horizontal, house, landscape, leaf, lighting, lights, luminance, maple, night, ottawa, parliament, patterns, peace, political, red, roof, senate, show, sky, symbol, time, tourism, tower, wave, waving,