Gothic architecture originated in France in the 12th-15th centuries and was inspired by Romanesque architecture and Moorish architecture. It is characterized by pointed arches, ribbed vaulting, flying buttresses, stained glass windows, and elaborate sculptures. Examples include Notre Dame Cathedral and St. Patrick's Cathedral. Gothic architecture allowed churches to reach new heights through innovations like pointed arches, which exert less outward pressure than rounded arches, and ribbed vaulting supported by columns. Flying buttresses were also introduced to counter the outward force of vaults and arches.