As you walk inside the cool, vaulted passage, look to your right. You will find a beautiful fifteenth-century stone relief. It depicts the Madonna and Child sitting on a throne, flanked by two important figures: Saint Tryphon, the patron saint of Kotor, holding a model of the city, and Saint Bernard of Clairvaux. Now, look down at the ground. You might notice something unusual about the height of the passage. Since its construction, the Sea Gate has actually subsided, or sunk into the ground, by more than 70 centimeters. This is due to the incredible weight of the stone masonry resting on the unstable, marshy soil of the bay. A practical tip for your visit: if you want to avoid the largest crowds, try to enter through this gate early in the morning or later in the afternoon, as it can become quite congested when cruise ships dock nearby with thousands of passengers.