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Village · Cuenca

Castillejo-Sierra

Castillejo-Sierra is a village in the Serranía Media (middle Serranía) of Cuenca, 1.7 km from Fresneda de la Sierra, with houses on steep streets and an official trail, the PR-CU 26, climbing to Calar del Sumidero with views of the Escabas. It had 423 inhabitants in 1940 and 28 in 2021: between 1960 and 1970 it lost more than half.

Houses of Castillejo-Sierra and the surrounding hills
Castillejo-Sierra, in 2017. Photo: «Castillejo-Sierra, Cuenca, España, 2017-05-22, DD 36», Diego Delso (2017) · CC BY-SA 4.0
On this page 9 sections
  1. A hillside village beside the Trabaque
  2. Routes
  3. The La Portera shelter
  4. Plan your visit
  5. Frequently asked questions
  6. Carry on from here
  7. Population
  8. Climate
  9. Location

A hillside village beside the Trabaque

Castillejo-Sierra lies in the Serranía Media near the Trabaque. It began in the Middle Ages, probably between the 12th and 13th centuries, beside the valley’s natural routes. Its houses descend narrow, steep streets, with the longstanding character of a mountain village.

The village overlooks holm-oak woods and cereal and sunflower fields from a knoll. Its La Asunción church, 16th-century according to the CuenCANP association, is in their view the largest in the Campichuelo; a comparison confirming this is missing. Upstream, the Trabaque rises in the Dehesa de los Olmos and passes Arcos de la Sierra; downstream it continues towards the villages of Sotorribas and, outside the Serranía, the willow-growing plains before joining the Escabas.

Routes

The PR-CU 26 short-distance trail is a 17 km circuit. It crosses the river plain on the old Poyatos cart road and climbs the Barranco de la Calera to Fuente del Resquicio. The climb does not ease until Calar del Sumidero, the highest point, overlooking the Escabas valley and Poyatos. It continues over the Cubas and Cañada Laite passes and descends to Prado de los Arroyos, the source of the village’s water. A steep track then follows the Fuente de la Herrería stream, facing the village and the ravine’s cleft, to Fuente de la Portera, with a picnic area at the entrance to the dehesa, wood pasture.

The La Portera shelter

Beside Fuente de la Portera is a stone shelter for transhumant shepherds: an enclosure with wooden fences for livestock and a room with a door, fireplace, wooden bunks and table for people. Alongside are a large water tank and a stone spring with a spout and a drinking trough in several sections, for livestock and shepherds. Guide Fernando Carreras believes the surrounding oaks were common ox pasture, but no document confirms it. Before reaching it, the Vallejo Millán alternates sunflower, wheat and barley with pine forest and Portuguese-oak woodland. He estimated about 15 km for the long circuit; the official PR-CU 26 description gives 17.

Plan your visit

The village takes a short time; the trail takes the day.

Before you travel

It is a long route with a sustained climb: start early and take water. There may be frost in winter.

Combine with

Fresneda de la Sierra is 1.7 km away as the crow flies and Arcos de la Sierra 3.9: the three link easily.

Frequently asked questions

Which trail starts from Castillejo-Sierra?

The PR-CU 26, Ruta de la Fuente de la Herrería: 17 km, 511 m of elevation gain and about 5 hours, through the river plain, Barranco de la Calera, Calar del Sumidero and Castillejo's dehesa.

How many people live there?

28 in the 2021 census. The peak was 423 in 1940, according to the INE.

Carry on from here

The rivers, zones, eras, places and official routes that the atlas links with Castillejo-Sierra.

Lands and landscapes

From here, follow the memory of the land

These readings connect Castillejo-Sierra with the stories, the work and the villages around it.

Official routes

Near Castillejo-Sierra

See 5 more

Population of Castillejo-Sierra, 1842–2021

Castillejo-Sierra reached 423 inhabitants in 1940. The 2021 census counted 28, 93 % fewer. It is the story told in the emptying.

Population of Castillejo-Sierra over time 1842: 247 inhab.1877: 393 inhab.1887: 384 inhab.1897: 381 inhab.1900: 368 inhab.1910: 392 inhab.1920: 419 inhab.1930: 397 inhab.1940: 423 inhab.1950: 385 inhab.1960: 273 inhab.1970: 106 inhab.1981: 59 inhab.1991: 66 inhab.2001: 47 inhab.2011: 33 inhab.2021: 28 inhab. 184218971920195019812021 423 28
Registered population according to INE censuses (1842–2021).

Climate in Castillejo-Sierra month by month

Averages for the ten years from 2015 to 2024 from the ERA5 reanalysis (Copernicus), for a grid cell with a reference altitude of 1012 m. They are model estimates, not measurements from a local station or thirty-year climate normals.

Source: Copernicus ERA5 via Open-Meteo, CC BY 4.0. Retrieved: 2026-10-09.

ValueJanFebMarAprMayJunJulAugSeptOctNovDec
Mean max. (°C)91214172227323125201311
Mean min. (°C)1236914171713952
Precipitation (mm)635482745037131437757362
Days with precipitation ≥ 1 mm981211873479118
Frost days1494100000037

Location

Location of Castillejo-Sierra Albalate de las NoguerasArcos de la SierraCañamaresCañizaresCastillejo-SierraCuencaFresneda de la SierraLa FronteraFuertescusaLas MajadasPortillaPoyatosTorralbaZarzuelaSotorribas PR-CU 114: Sendero del Cucurucho y la HocecillaPR-CU 115: Sendero de la DehesaPR-CU 22: Ruta de El Calahorrano y el cerro de la CuevaPR-CU 24: Ruta del cerro Calera y Los VallejosPR-CU 26: Ruta de la fuente de la HerreríaPR-CU 27: Ruta del Pado de NavelíarPR-CU 30: Ruta del Gollizno y Las Canteras Fresneda de la SierraArcos de la SierraLa FronteraPoyatosLas Librerías viewpoint
Municipal boundaries: © IGN (CC BY 4.0). Route lines: simplified official tracks; source and GPX on each page. Approximate position (village centre).

● Reference point · ● Villages · ● Places · ━ Routes nearby

Location sketch. The map with paths and names loads as you scroll to it.

Approximate position: village centre.

Reference villages: Fresneda de la Sierra · Arcos de la Sierra · La Frontera · Poyatos.

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Where the data on this page come from

«Source consulted»: the primary source has been read. «Reference located»: the source has been identified but not yet read. «Open question»: the figure needs confirmation.