The Plaza de España in the Parque de María Luisa was built in 1928 for the Ibero-American Exposition of 1929. It is a landmark example of the Regionalism Architecture, mixing elements of the Baroque Revival, Renaissance Revival and Moorish Revival (Neo-Mudéjar) styles of Spanish architecture.
The plaza complex is a huge half-circle with buildings continually running around the edge accessible over the moat by numerous bridges representing the four ancient kingdoms of Spain. In the centre is the Vicente Traver fountain. By the walls of the Plaza are many tiled alcoves, each representing a different province of Spain. Each alcove is flanked by a pair of covered bookshelves, said to be used by visitors in the manner of 'Little Free Library'. Each bookshelf often contains information about their province, yet you can often find regular books as well for some people have taken to donating their favorite book to these shelves.
The Plaza de España has been used as a filming location, including scenes for the 1962 film Lawrence of Arabia. The building was used as a location in the Star Wars movie series Star Wars: Episode II – Attack of the Clones (2002) — in which it featured in exterior shots of the City of Theed on the Planet Naboo. It also featured in the 2012 film The Dictator.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.