The River Shannon is the longest river in Ireland, stretching approximately 360 kilometers (224 miles). It flows from Lough Allen in the north to Shannon Estuary in the south, eventually emptying into the Atlantic Ocean. The river serves as a natural boundary between several counties and is an important waterway for transportation and tourism. The Shannon is known for its scenic beauty, featuring lush landscapes and historic sites along its banks. It supports various wildlife and is popular for recreational activities such as fishing, boating, and kayaking. The river also plays a vital role in Irish culture and history.