Complex sentence: Québec City was built on a riverside bluff Cap Diamant in the 17th-century, and throughout Quebec City there are strategically placed public stairways that provide access to and from the bluff.
Split into simpler sentences: Québec City was built on a riverside bluff Cap Diamant in the 17th-century. Throughout Quebec City there are strategically placed public stairways that provide access to and from the bluff.