Build it up!

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Across
  1. 1. Which of the city is home to the Gateway Arch?
  2. 3. What's the name for a type of tall, slender tower built into or adjacent to mosques?
  3. 5. Which architectural style is reflected in Paris' Notre Dame Cathedral?
  4. 6. What's the topmost part of a column called?
  5. 8. Which component in a typical staircase is responsible for supporting the surface portion of stairs on which people walk?
Down
  1. 1. which american architect has been called the father of "skyscrapers" and "father of modernism"
  2. 2. What do we call the stonework elements that support the glass in a Gothic window?
  3. 4. Which of the following architectural terms describes the interior curve of an arch?
  4. 7. In which country did the academic architectural style "Beaux-Arts" originate?