Dublin is the capital and largest city of Ireland. It is located on the east coast of Ireland, at the mouth of the River Liffey, situated on Dublin Bay which opens into the Irish Sea. Dublin lies within the province of Leinster and is bordered by the Dublin Mountains to the south. It serves as the main cultural, financial, political, and economic center of Ireland and the Greater Dublin metropolitan area surrounds the city, making it the most populous region of the country.