Αχαΐα is a regional unit in western Greece, located along the northern coast of the Peloponnese peninsula. It is known for its rich history, beautiful landscapes, and significant archaeological sites. The capital city, Patras, is the largest city in the region and serves as an important port and cultural center. The region is characterized by its diverse geography, including mountains, valleys, and coastline along the Ionian Sea. Achaia is also famous for its production of wine and olives, contributing to the local economy. The area has a mix of modern and traditional influences, making it a unique destination for visitors.