Valletta's 320 monuments, all within a total area of 55 hectares, make it one of the areas with the highest historical concentration in the world. Built by the Order of St. John, the first stone of Malta's capital was laid in 1566, after the "Great Turkish Assault," seeking to block access to the Grand Harbour in a possible new Turkish attack. After that, many followed to form the most modern city in Europe in the 16th century. At that time, its main charm lay not only in its honey-colored streets or panoramic views, but in the fact that the city of Valletta did not smell! It was built on a sewage system that made it the dream city of European nobility. Also, thanks to the Order of St. John, Baroque arrived in the city, which modernized in the new style, losing its previous air of a war fortress. The buildings rose in a plant, and Baroque facades were superimposed, which still observe us today from the large gateways of the lodges and properties of the knights. At the beginning of the 21st century, the city retains all its charm. It can penetrate the spirit of the most experienced travelers, leaving a hard-to-forget mark. We will walk its streets and most emblematic points such as Upper Barraka garden, with its spectacular views of the Grand Harbour, we will walk its streets, which, as we said, show at every step palaces from different eras, the lodges of the tongues that composed the Order, countless churches... each step in the only European capital that is a world heritage site. A walk through centuries of history in this city built "by gentlemen for gentlemen". And behind the austere facade of the Co-Cathedral of St. John is one of the most impressive cathedrals that travelers can find far and wide in the world. Inaugurated in 1572, shortly after the great Turkish assault, the first intention is to build a conventual church for the new city of the order, for the exclusive use of its knights, and due to the situation at the time (a new Turkish attack was feared at any moment) a building was built according to the times: sober, military, and resistant. But with the passage of time and the change of situation, the building also changed: with the arrival of the Baroque, the building was decorated to the point that today it is considered one of the greatest exponents of this style. A riot of color that goes from the floor (which has been described as "the most beautiful floor in the world") full of worked marble tombs, to the ceiling decorated by Mattia Preti, passing through each and every one of the chapels of the different languages of the order. And as the culmination of this unique building, two Caravaggios: "St. Jerome Writing" and the artist's masterpiece, "The Beheading of St. John".