Which famous structure is an example of Gothic architecture from the medieval period?

Notre Dame is a quintessential example of Gothic architecture, which flourished in Europe during the medieval period, particularly from the 12th to the 16th centuries. This iconic cathedral, located in Paris, showcases the hallmark features of Gothic design, including its pointed arches, ribbed vaults, and flying buttresses, which allowed for higher ceilings and larger windows filled with intricate stained glass. The overall aesthetic of Notre Dame is characterized by elaborate sculptures and detailed facades that reflect the religious and architectural ambitions of the time.

In contrast, other structures mentioned do not represent Gothic architecture. The Parthenon, for example, is a classic example of ancient Greek architecture, specifically the Doric style. The Colosseum is a Roman amphitheater that showcases ancient Roman engineering and architectural styles, primarily using arches and concrete rather than Gothic elements. The Leaning Tower of Pisa is a freestanding campanile known for its unintended tilt and is reflective of Romanesque architecture rather than the Gothic style. Each of these buildings illustrates different architectural traditions and historical contexts, which helps to underscore why Notre Dame stands out as a prime example of Gothic architecture.