Perhaps the most surprising thing about the Church of San Juan is the necropolis of tombs carved into the rock foundations. It is a somewhat unsettling place to locate a temple, surrounded by a large stone burial ground.
But the most interesting part is inside. Guided tours can be reserved at the tourist office. Inside it has some 13th-century wall paintings that may be some of the best preserved in Aragon.

Six 13^th-century churches! One for each neighbourhood. And of course, the inevitable happened – there was a sculptor who got tired of the usual stuff.

In Santa María the maestro of Uncastillo and his helpers gave free rein to their imagination. And what an imagination! In the corbels of the apse, (above, almost on the roof) you can see sexual scenes, musicians, acrobats and even dentists — the realities of the world.

The arched main entrance is profusely decorated. There is not a space left to be carved. Spend some time looking at it. You will be surprised at what you can see,

Barrio Nuevo Street (Calle Barrio Nuevo) is where the Jewish quarter of Uncastillo was located – one of the most important in Aragon. The presence of Jews in the Cinco Villas was significant in the middle ages because they contributed about 30% of the income that went to public coffers.
The Jewish quarters were usually gated off, and had, therefore, limited space. For that reason, there are so many alleyways in this area. Due to the lack of space, second floors were created between buildings, leaving a covered alley below.
You can also see small holes in some doorways. This is where the Mezuzah was fixed to the doorway – a small box with some verses of the Torah that a good believer has to touch every time he enters and leaves the house.

The most privileged place of the town and from where the whole area can be seen is the Peña Ayllón (Ayllón rock), upon which the castle is sited.
There are several preserved buildings here: the old wall and its towers, the “Tower of Homage”, a second tower, and the Gothic palace that was built by Pedro IV between 1356 and 1358. Only an octagonal tower and two walls remain of the palace, but they are of such beauty that it is worth a visit to see them and enjoy the view from the tower

San Martín is a clear example of what happens in Uncastillo. A temple with a lot of different styles: Romanesque, Gothic, Lombard – an architectural Frankenstein you might think. Yes. But it is so harmonious and so beautiful that it will surprise you. How is that possible? Because it is Uncastillo. And here everything is tremendously aesthetic.
But inside? Inside you will be even more surprised. In 1999, it became the “Centre for Religious Art of the Pre-Pyrenees”. The pieces of goldsmith work and religious imagery are displayed in glass cases and belong to collections from other churches in Uncastillo and other towns in the Pre-Pyrenees; as well as the altarpieces that adorn the different chapels.

In Uncastillo do not think that they only went from Church to Church. The abundance of architectural works is a reflection of the economic strength of the town. And here is where it would come to life: in Market Square.
Who traded in Uncastillo? Certainly the abundant Jewish residents of the town, which had one of the oldest, most populated Jewish quarters in Aragon, and of course one of those that paid most taxes to the kingdom.

The interesting thing about this temple is what you do not see. Look, look … what’s missing? And in its place, they made a wall instead, but not as well made as in the original temple.
Yes! The façade is missing! And where is it? You might well ask. Well, it is in Boston, USA. It went there after it was sold in 1919 by the Bishop of Jaca and the priest of Uncastillo. They sold it all for the paltry sum of 800 pesetas. A figure that even in 1919 was cheap for the great sculptural work that was lost.

A large building that seems impenetrable houses the Uncastillo Town Council. This Town Hall was built in the 16th century in the Renaissance style, just like the Church of St. Andrew (San Andrés).
On the façade are depicted the three theological virtues and the four cardinal virtues: Faith, Hope, Charity, Temperance, Justice, Strength and Prudence. Let’s see if you know which is which.