The Firth of Forth is an estuary located in Scotland, where the River Forth meets the North Sea. It stretches approximately 47 miles (75 kilometers) from its source to the sea, and it is known for its scenic beauty and rich marine life. The estuary is surrounded by several towns and cities, including Edinburgh, the capital of Scotland, which lies to the south. The Firth of Forth is also famous for its iconic bridges, particularly the Forth Bridge, a UNESCO World Heritage Site, and the Forth Road Bridge. These structures connect the regions on either side of the estuary and are vital for transportation. The area is popular for recreational activities such as sailing, fishing, and birdwatching.