Construction works for Peñafiel Castle commenced in the 10th century, although the contemporary structure underwent major interventions during the 14th and 15th centuries. This medieval fortress was declared a National Monument in 1917 and currently stands as a veritable emblem of wine tourism in Ribera del Duero.
Peñafiel and its castle were key defensive locations along river Duero, both for Christians and Muslims in the 9th and 10thcenturies. Sitting atop the hill, the castle controlled the valleys of rivers Duero, Duratón and Botijas, and protected the population.
References:Considered to be one of the most imposing Roman ruins, Diocletian’s palace is certainly the main attraction of the city of Split. The ruins of palace, built between the late 3rd and the early 4th centuries A.D., can be found throughout the city. Today the remains of the palace are part of the historic core of Split, which in 1979 was listed by UNESCO as a World Heritage Site.
While it is referred to as a 'palace' because of its intended use as the retirement residence of Diocletian, the term can be misleading as the structure is massive and more resembles a large fortress: about half of it was for Diocletian's personal use, and the rest housed the military garrison.
Architecture
The palace has a form of an irregular rectangle with numerous towers on the western, northern, and eastern facades.