The little town of Arévalo lies in the north of Ávila province at the junction of the Río Arevalillo with the Río Adaja. A number of churches and convents bear witness to its former importance as one of the keys of Castile. The old town has been declared a national monument.
In the 14th century castle, with an imposing keep, which stands above the Río Adaja, on the northwestern outskirts of Arévalo, Isabella the Catholic spent her early years.
In the west of Arévalo stands the church of San Miguel, which has a beautiful retablo; south of this, just inside the old town walls, is the 14th century church of San Juan; and in the Plaza de Arrabal is Santo Domingo, which has a Byzantine apse.
On a hill 2km/1.5mi south of Arévalo is the church of La Lugareja, one of the finest examples of Mudéjar architecture, though only the apse and the transepts are preserved. The church belonged to a Visigothic monastery which was rebuilt in the 13th century.
In Plaza del Real, to the south of Plaza de la Villa, are a number of noble mansions. The Arco de Alcocer, on the south side of the square, was originally the main gate in the town walls.