The Basilica della Santa Casa (English: Basilica of the Holy House) is a shrine of Marian pilgrimage in Loreto, Italy. The basilica is known for enshrining the house in which the Blessed Virgin Mary is believed to have lived. Pious devotees believe that the same house was flown over by Angelic beings from Jerusalem to Tersatto ( Trsat in Croatia ) then to Recanati before arriving at the current site. 
Pope Benedict XV designated the Blessed Virgin Mary under the same title to be Patroness of air passengers and auspicious travel on 24 March 1920. Accordingly, Pope Pius XI granted a Canonical Coronation to the image of Our Lady of Loreto made of Cedar of Lebanon on 5 September 1922, replacing the torched image consumed in fire on 23 February 1921.
The façade of the church was erected under Sixtus V, who in 1586 fortified Loreto and gave it the privileges of a town; his colossal statue stands on the parvis, above the front steps, a third of the way to the left as one enters. Over the principal doorway there is a lifesize bronze statue of the Virgin and Child by Girolamo Lombardo; the three superb bronze doors executed at the latter end of the 16th century under the reign of Paul V (1605-1621) are also by Lombardo, his sons and his pupils, among them Tiburzio Vergelli, who also made the fine bronze font in the interior. The doors and hanging lamps are by the same artists. The richly decorated campanile (1750 to 1754), by Vanvitelli, is of great height; the principal bell, presented by Leo X in 1516, weighs 11 tons. The interior of the church has mosaics by Domenichino and Guido Reni and other works of art, including statues by Raffaello da Montelupo. In the sacristies on each side of the right transept are frescoes, on the right by Melozzo da Forlì, on the left by Luca Signorelli and in both there are some fine intarsias; the basilica as a whole is thus a collaborative work by generations of architects and artists.
The main attraction of Loreto is the Holy House itself (in Italian, the Santa Casa di Loreto). It has been a Catholic pilgrimage destination since at least the 14th century and a popular tourist destination for non-Catholics as well.
It is a plain stone building, 8.5 m by 3.8 m and 4.1 m high; it has a door on the north side and a window on the west; and a niche contains a small black image of the Virgin and Child, in Lebanon cedar, and richly adorned with jewels. Around the house is a tall marble screen designed by Bramante and executed under Popes Leo X, Clement VII and Paul III, by Andrea Sansovino, Girolamo Lombardo, Bandinelli, Guglielmo della Porta and others. The four sides represent the Annunciation, the Nativity, the Arrival of the Santa Casa at Loreto and the Nativity of the Virgin, respectively. The treasury contains a large variety of rich and curious votive offerings. The architectural design is finer than the details of the sculpture. The apse is decorated with 19th-century German frescoes.
The history of the house dates from at least the close of the Crusades. It is briefly referred to in the Italia Illustrata of Flavius Blondus, secretary to Popes Eugene IV, Nicholas V, Calixtus III and Pius II; it is to be read in all its fullness in the Redemptoris mundi Matris Ecclesiæ Lauretana historia, by a certain Teremannus, contained in the Opera Omnia (1576) of Baptista Mantuanus.
The town has been a popular pilgrimage site since the 13th century. Local lore recounts that the house in which the Holy Family lived was miraculously flown from Palestine to Loreto by four angels just before the final expulsion of the Crusaders from the Holy Land. According to this narrative, the house at Nazareth in which Mary had been born and brought up, received the Annunciation, and had lived during the Childhood of Christ and after his Ascension, was converted into a church by the Twelve Apostles. In 336, Empress Helena made a pilgrimage to Nazareth and directed that a basilica be erected over it, in which worship continued until the fall of the Kingdom of Jerusalem.
The tale further states that, threatened with destruction by the Turks, the house was carried by angels through the air and initially deposited in 1291 on a hill at Tersatto (now Trsat, a suburb of Rijeka / Fiume, Croatia), where an appearance of the Virgin and numerous miraculous cures attested its sanctity. These miracles were confirmed by investigations made at Nazareth by messengers from the governor of Dalmatia. In 1294, angels carried it again across the Adriatic Sea to the woods near Recanati; from these woods ( Latin lauretum, Italian Colle dei Lauri or from the name of its proprietress Laureta ) the chapel derived the name which it still retains ( sacellum gloriosæ Virginis in Laureto ). From this spot it was afterwards removed to the present hill in 1295, with a slight adjustment being required to fix it in its current site. It is this house that gave the title Our Lady of Loreto sometimes applied to the Virgin; the miracle is occasionally represented in religious art wherein the house is borne by an angelic host.
Bulls in favour of the Shrine at Loreto were issued by Pope Sixtus IV in 1491, and by Julius II in 1507, the last alluding to the translation of the house with some caution (ut pie creditur et fama est). While, like most miracles, the translation of the house is not a matter of faith for Catholics, nonetheless, in the late 17th century, Innocent XII appointed a missa cum officio proprio (a special mass) for the Feast of the Translation of the Holy House, which as late as the 20th century was enjoined in the Spanish Breviary as a greater double on 10 December 10.
On 4 October 2012, Benedict XVI visited the Shrine to mark the 50th anniversary of John XXIII's visit. In his visit, Benedict formally entrusted the World Synod of Bishops and the Year of Faith to the Virgin of Loreto. 
According to Herbert Thurston, in some respects the Lauretan tradition is "beset with difficulties of the gravest kind", which were noted in a 1906 work on the subject. There are documents which indicate that a church dedicated to the Blessed Virgin already existed at Loreto in the twelfth and thirteenth centuries, that is, 180 years before the time of the supposed translation; and there is no mention of the supposed miraculous translation of the Holy House in 1472. Thurston notes that papal confirmations of the Loreto tradition are relatively late (the first Bull mentioning the translation is that of Julius II in 1507), but that they are at first very guarded in expression, for Julius introduces the clause "ut pie creditur et fama est". Thurston suggests that a miracle-working statue or picture of the Madonna was brought from Tersato in Illyria to Loreto by some pious Christians and was then confounded with the ancient rustic chapel in which it was harboured, the veneration formerly given to the statue afterwards passing to the building.
Finally, he draws comparisons to the shrine at Walsingham, the principal English shrine of the Blessed Virgin, the legend of "Our Lady's house" (written down about 1465, and consequently earlier than the Loreto translation tradition) supposes that in the time of St. Edward the Confessor a chapel was built at Walsingham, which exactly reproduced the dimensions of the Holy House of Nazareth. When the carpenters could not complete it upon the site that had been chosen, it was transferred and erected by angels' hands at a spot two hundred feet away.
In modern times, the Church traced the linguistic origins of the story to a local aristocratic family called "Angelos", which were responsible for the transfer. According to Papal archivist Guiseppe Lapponi, it seems that a family by the name of Angeli saved the bricks of the Holy House from the Muslim invasion. Excavations beneath the House of Loreto found coins, two of which are connected to the Angeli family.
Our Lady of Loreto is the title of the Virgin Mary with respect to the Holy House of Loreto. Her statue, carved from Cedar of Lebanon, is a "Black Madonna," owing to centuries of lamp smoke. It, like the Holy House, is associated with miracles. In the 1600s a Mass and a Marian litany was approved. This "Litany of Loreto" is the Litany of the Blessed Virgin Mary, one of the five litanies approved for public recitation by the Church. In 1920 Pope Benedict XV declared the Madonna of Loreto patron saint of air travellers and pilots. The statue was commissioned after a fire in the Santa Casa in 1921 destroyed the original madonna, and it was granted a Canonical Coronation in 1922 by Pope Pius XI. Our Lady of Loreto is commemorated on December 10.