When travelling to Koh Samui there are many beautiful places where you can scuba dive and snorkel. There are also many tour operators to choose from, one of which is 100 Degrees East, offering boat excursions with snorkelling and diving activities among colorful fishes and coral reefs.

Built on the remains of the old Moorish mosque, the building started out as a Parish Church, ascending in importance, as Archiprestal (1281), Collegiate (1413) and finally becoming a Cathedral in 1510. Building started at the end of the 13th Century. It is of Levantine Gothic Style, with three naves and a gallery, a transept transformed by Pere Compte at the beginning of the 16th Century and side chapels between the buttresses. Of note inside is the ironwork, the Baroque organ, the work of Jacinto Perales and the choir stalls, made by Juan Bautista Borja and Tomás Llorens (1716-1718). The sacristy is home to the relics cabinet and cupboard, the work of José Ganga (1732-1734), holding diverse relics within a carved bust. On the outside, of note in the Tower, built between the late 13th Century and the mid-14th Century, the same as the three main gateways, The Puerta de Cadenas (14th Century), Puerta de Loreto (15th Century) and finally, the Portada de la Anunciación, completed by Juan Inglés in 1558.

Built on the land occupied earlier by the Corpus Christi hospital, one of the city's medieval hospitals. In 1558 the city exchanged plots with Archishop Esteban Almeyda and the hospital was relocated to the Parish of Santiago. The building may have started in the 16th Century, soon after the establishment of the Orihuela Bishopric. It underwent profound changes in the 18th Century under the reigns of Bishops José Flores Ososrio and Pedro Albornoa Tapia. In the mid-20th century, it lost its original functions, was restored at the beginning of the 21st Century and is currently home to the Diocese Museum of Sacred Art. At the back, facing the river, there is a gallery with semi-circular arches. Inside, another striking feature is the cloister with heraldic decoration, the main staircase of Alicante marble and the dome built on an octagonal base, with exterior cobalt blue glazed tiles.