The architecture in the Dominican Republic represents a complex blend of diverse cultures. The deep influence of the European colonists is the most evident throughout the country. Characterized by ornate designs and baroque structures, the style can best be seen in the capital city of Santo Domingo, which is home to the first cathedral, castle, monastery, and fortress in all of the Americas, located in the city's Colonial Zone, an area declared as a World Heritage Site by UNESCO. The designs carry over into the villas and buildings throughout the country. It can also be observed on buildings that contain stucco exteriors, arched doors and windows, and red tiled roofs.