In 1185, Cork was officially established, but the city remained very small and insignificant for centuries. In the 17th century, rapid expansion began to occur, primarily because of the butter industry. The butter trade ensured prosperity for Cork in the 17th and 18th centuries, and these were good times for the small town that was on its way to becoming the premier city in southern Ireland. The River Lee divides Cork into two parts, and as a result, an astounding array of bridges and quays are laced throughout the city. Every view seems like a postcard photo, and even with a modest amount of activities, Cork remains incredibly exciting. The air is clean and crisp, and the mood is always right. The atmosphere throughout the city is a lively and energetic one, and simply walking around looking at the sights is enough to keep you from ever getting bored. A few of the restaurants in Cork are absolute gems, and the area in and around Paul Street features outdoor merchants selling all kinds of interesting items. The Shandon Steeple is a joy to climb, as you are welcome to ring the bells at the top, and this is only one of the highlights of this great city.