The Roman Theatre in Cartagena was built between 5 and 1 BCE, as has been proven by the dedication of the edifice to Gaius and Lucius Caesar, grandsons of Augustus, who had designated them as his successors.
In the 3rd century a market was built over the theatre, reusing its materials, with a semicircular open space which followed the plan of the orchestra. The market was perhaps abandoned after a fire caused by the Vandals in 425. A market quarter of the Byzantines was established on the site in the 6th century.
During the 13th century the Old Cathedral of the city was built over the upper cavea. In 1988 the first remains of the theatre were discovered during the construction of the Centro regional de artesanía. The archaeological excavations and the restorations were completed in 2003. In 2008 a museum, designed by Rafael Moneo, was opened.
The cavea was carved directly on the rocks in its central part, and tops a series of vaulted galleries. It had a capacity of some 6,000 spectators. It was divided horizontally in three parts (ima, media and summa cavea), in turn divided into radial sectors by the staircases (five in the upper part, seven in the medium and upper ones).
The public entered from two side passages (aditus), where the dedications have been found. The orchestra had a semicircular plan and housed three rows of wooden seats for the authorities (proedria). The stage (proscaenium) had a length of 43.60 m. The scaenae frons had three semicircular exedras and decorated by two orders of columns, with bases and capitals in Luni's marble, and shaft in pink travertine of Mula. The stage edifice had a total height of 14.60 m. It have been found three round altars dedicated to the Capituline Triad and to the divinities of Apollo (Graces, Muses and Horae), as well as a statue of Apollo with lyre and one of Rhea Silvia.
Behind the stage building was a portico (porticus post scaenam) with a double porticoed gallery revolving around a central room housing a garden.
References:Goryōkaku (五稜郭) (literally, 'five-point fort') is a star fort in the Japanese city of Hakodate on the island of Hokkaido. The fortress was completed in 1866. It was the main fortress of the short-lived Republic of Ezo.
Goryōkaku was designed in 1855 by Takeda Ayasaburō and Jules Brunet. Their plans was based on the work of the French architect Vauban. The fortress was completed in 1866, two years before the collapse of the Tokugawa Shogunate. It is shaped like a five-pointed star. This allowed for greater numbers of gun emplacements on its walls than a traditional Japanese fortress, and reduced the number of blind spots where a cannon could not fire.
The fort was built by the Tokugawa shogunate to protect the Tsugaru Strait against a possible invasion by the Meiji government.
Goryōkaku is famous as the site of the last battle of the Boshin War.