Mainland Spain is dominated by high plateaus and mountain ranges such as the Pyrenees or the Sierra Nevada. Running from these heights are several major rivers such as the Tajo, the Ebro, the Duero, the Guadiana and the Guadalquivir. Alluvial plains are found along the coast, the largest of which is that of the Guadalquivir in Andalusia, in the east there are alluvial plains with medium rivers like Segura, Júcar and Turia. Spain is bound to the east by Mediterranean Sea (containing the Balearic Islands), to the north by the Bay of Biscay and to its west by the Atlantic Ocean, where the Canary Islands off the African coast are found.
Spain was part of the Roman Empire and many areas of Spain retain significant Roman architectural remnants. The Roman aqueduct at Segovia is still in use as of 2004; Mérida, now the Extermaduran capital but once the capital of the Roman province of Lusitania, retains over 5 miles of its Roman aqueduct, Roman bridge over the River Guadiana, an arch of Trajan, and significant remnants of a Roman forum, amphitheatre, and a temple popularly accounted to have been dedicated to Diana (goddess). Another Roman bridge crosses the Tagus River at Alcántara. Lesser Roman ruins can be found in the heart of Barcelona.
Roman Catholicism is, by far, the most popular religion in the country, with four in five Spaniards (80%) self-identifying as Catholics. The next group (one in eight, or 12%) is represented by atheists or agnostics. Minority religions account for one in seventy (1.4%) of all Spaniards.
Philip V, the first Bourbon king, of French origin, signed the Decreto de Nueva Planta in 1715, a new law that revoked most of the historical rights and privileges of the different kingdoms that conformed the Spanish Crown, unifying them under the laws of Castile, where the Cortes had been more receptive to the royal wish. Spain became culturally and politically a follower of France. The rule of the Spanish Bourbons continued under Ferdinand VI and Charles III. His son Carlos IV was truly incompetent (some say mentally handicapped), and under his reign Spain fell to the armies of Napoleon.
While the siesta — an hours-long mid-afternoon break from work — is generally in decline, the typical rhythm of the day in Spain remains relatively distinct from the European norm. Many shops and some museums (though relatively few other businesses) still split their hours into two distinct periods of opening with a two or three hour break in the middle; a paseo (stroll) in the early evening remains a common custom in many smaller cities and to some extent even in the larger ones; the dinner hour is the latest in Europe, typically about 10 p.m.; nightlife begins accordingly late, with many dance clubs (even in relatively small cities) opening at midnight and staying open until dawn; in Madrid in the summer there is nothing unusual about a live musical performance being scheduled for one or two o'clock in the morning.
The crown jewel of Spain's next decade of infrastructure construction is the Spanish high speed rail network, Alta Velocidad Española AVE. Currently, an ambitious plan includes the construction of a 7000 km network, centered naturally on Madrid. The overall goal is to have all important provincial cities be no more than 4 hours away from Madrid, and no more than 6 hours away from Barcelona. Currently, AVE high-speed trains link Atocha station to Seville in the south and Lleida in the east (to be extended to Barcelona).
The Castilian-derived Spanish (called both Español and Castellano in the language itself) is the official language throughout Spain, but other regional languages are also spoken. Without mentioning them by name, the Spanish Constitution recognizes the possibility of regional languages being coofficial in their respective autonomous communities.
Spain is considered by many, including a large part of Spanish population, to be a group of nations unified under a single State, much like Belgium, Switzerland or the United Kingdom. Despite this, the policy of many Spanish governments has led to a "Spanish nationhood" which is the one people identify with Spain internationally.
Spain never entered the period of the Dark Ages such as were endured in Britain, Gaul, Lombardy and Germany. The Visigoths tended to maintain more of the old Roman institutions, and they had a unique respect for legal codes that resulted in continuous frameworks and historical records for most of the period between 415, when Visigothic rule in Spain began, and 711, when it is traditionally said to end. The proximity of the Visigothic kingdoms to the Mediterranean and the continuity of western Mediterranean trade, though in reduced quantity, supported Visigothic culture. Arian Visigothic nobility kept apart from the local Catholic population. The Visigoth ruling class looked to Constantinople for style and technology while the rivals of Visigothic power and culture were the Catholic bishops— and a brief incursion of Byzantine power in Cordoba.
Spanish rule in Morocco ended in 1956. Though militarily victorious in the 1957-1958 Moroccan invasion of Spanish West Africa, Spain gradually relinquished its remaining African colonies. Spanish Guinea was granted independence as Equatorial Guinea in 1968, while the Moroccan enclave of Ifni had been ceded to Morocco in 1969.