Ariño is located in the shelter of the Arcos mountain range at the confluence of the Martín and Escuriza rivers. The slopes on which it grew give the streets leading up to the old town a steep slope. It contrasts the historic center and the old town on the top and on the southern slope, on the sunny side over the Escuriza River, with the modernity of the mining town oriented to the north over the valley of the Martín River.
Thus, the regular urban grid that characterizes the housing constructions for miners is topped by semicircular squares at both ends, connected by the local road. To the northeast the Mining Square and to the southwest the Miner’s Squarewhere a old mining castle used in the first mines of Ariño and that has recently been recovered for exhibition and decoration of this square, standing out for its height from the surrounding buildings, such as the old commissary now converted into a Mining Museum “Pozo Corral Negro”. and the former offices of the mining company SAMCA. On a terrace, on the slope and at the foot of the Sierra de Arcos, on the slope of the Escuriza River, an old school built by the Ángel Luengo mining company, later SAMCA, for the children of miners, was adapted for Antonio Beltrán” Interpretation Center of Cave Art and headquarters of the Cultural Park of the Martín River.
In contrast to the modernity of this area, we find the primitive urban center, which grew on top of the hill and around it, which must have been selected for the wide visibility it offers and its easy protection, controlling access both through the valley of the Martín and Escuriza rivers, and which probably housed an ancient fortified settlement that gave rise to the population.
The union of these two areas is made by means of a long and steep slope – Teruel street – which goes up the slope of the hillside transversely until it reaches a square to which once gave way to an arch, an ancient gateway to the primitive enclosure and of which today there are no remains, except for some photographs that remind us of its location, and that show us that to the arch an open chapel was added under the invocation of the Martyr Saints -San Fabián and San Sebastián-, following the structure and aesthetics of the models of the region, and a small open niche in the facade of one of the houses that today welcomes the saints remembering its old location.
The main services of the town (bars, pharmacy and some stores) are concentrated in this square, the junction of the two villages. From here, the primitive urban nucleus unfolds, adapting itself to the gentle irregularities of the hill that sustains it and gives its streets gentle slopes.
The houses are generally three stories high and an old manor house stands out near the main square where the town hall is located, with a traditional Aragonese brick gallery.
The hill preserves the ancient semicircular arched doorway of the well-known hermitage of Pilar, with molding carved with diamond points and which seems to date back, along with other constructive remains, probably from the old castle, to the 12th century. It is known that the temples dedicated to the Virgin of Pilar are related to the passage of pilgrims through the town. Agustín Ubieto places Ariño on the Calatravan road from Daroca to Calanda.
To the southeast of this hermitage was built the church of San Salvador, a baroque temple of the eighteenth century, built in masonry and ashlar. The floor plan has three naves, with chapels on the sides. A sepulcher built in the chapel dedicated to the Virgin of Carmen stands out for its uniqueness. The cross carved on the longitudinal side of the tomb corresponds to the cross of the Calatravos, whose order played an important role in the reconquest of Lower Aragon, having the headquarters of the commandery in the castle of Alcañiz since the 12th century, and which we must relate to the pilgrimage route indicated. The front of the church is framed by an ashlar facade that houses a unique niche.
The tower stands out from the urban area because of its four bodies, the upper ones octagonal, which on a circular entablature give it its unique cylindrical appearance, attracting attention, above all, because of its steep slope.
At the top of the other summit of the hill today we find the fully restored hermitage of Santa Barbara, which stands out from the rest of the mining town of which it is the patron saint and to which it provides protection and shelter.