The Bay of Kotor in Montenegro is a 15-mile winding bay leading from the Adriatic Sea. The bay is composed of four smaller gulfs and, due to its many twists and turns, is often called Europe's southernmost fjord. The bay is actually a submerged river canyon of the Bokelj River which used to run from the high mountain plateaus of Mount Orjen. Numerous cities and towns are located on the bay such as Kotor (a UNESCO World Heritage Site), Perast (a UNESCO World Natural and Historical Heritage Site) and Prčanj. When we entered the bay, the fog was so thick that we could hardly see anything as we traversed the length of the bay. After we docked in Kotor (at the far end of the bay), the weather took a turn for the better and began to clear. By the time we started our tour of the bay, the fog had dissipated and we discovered one of the most beautiful places that we have ever visited. As we passed along the shore, we were able to observe these wonderful towns and the surrounding mountains.