In Portugal there is a vast religious heritage dating back to early times, not only containing a high concentration of megalithic monuments but also having its own culture and mythology of the classical period, there still are several visible altars where divinatory services were made in ancient times.In this unique mythology, the principal deities were Endovelicus, Trebaruna and Ataecina, Portugal was considered in antiquity of the Mediterranean world as the "end of the world".There are references to two columns at the end of the Mediterranean sea marking the passage to the infinite abyss, the current Portuguese territory is thus referred to in Homer's Odyssey and the Argonauts of Apollonius as the land's end.Portugal was the destination of all navigators of antiquity, for this reason, many cults were imported, brought mainly by Greeks, Phoenicians and Romans, so there are shrines in Portugal and standing traditions with origins in various remote origins, for example, traces of Isis and Serapis cults, Egyptian deities, votive altars to Cybele, Phrygian mother goddess Cybele, shrines to Mithra of the Persians, and Greek Ares and Selene, among other Celtic deities and also a wide range of semi-regional or tutelary deities, like geniuses, lares, nymphs, etc..Portuguese Christianity is also unique, being one of the oldest in Europe, it preserves a vast ancient heritage that has undergone several changes over the centuries, after the fall of the Roman Empire the Visigothic culture spread through Portugal that has not yet been studied, there are many visible places of worship and initiation.Apart from all these places and epochs, it is also important to learn about religious orders, Enlightenment and Romantic movements, Judaism, Islam, all these cultures have marked their presence throughout the country leaving many abandoned sites that allowed their preservation having no changes in their structures.The Trilhos Místicos are not simple sightseeing but small formations made on location, promoting abandoned heritage, remembering the legends, traditions and cultures lost in time.Many of these religious sites are not accessible to the general public or are not easily found, some of these sites do not have prepared or trained guides in the area of religion; thereby the Trilhos Místicos guided tours allow direct contact with other religions.