Theatre of Pompey located in the administrative territorial entity Rome
The Theatre of Pompey (Latin: Theatrum Pompeii, Italian: Teatro di Pompeo) was a structure in Ancient Rome built during the latter part of the Roman Republican era by Pompey the Great (Gnaeus Pompeius Magnus). Completed in 55 BC, it was the first permanent theatre to be built in Rome. Its ruins are located at Largo di Torre Argentina.
Enclosed by the large columned porticos was an expansive garden complex of fountains and statues. Along the stretch of the covered arcade were rooms dedicated to the exposition of art and other works collected by Pompey during his campaigns.  On the opposite end of the garden complex was the Curia of Pompey for political meetings. The senate would often use this building along with a number of temples and halls that satisfied the requirements for their formal meetings. The curia is infamous as the place where Julius Caesar was assassinated by Brutus and Cassius during a session of the Senate on 15 March 44 BC.History
Origin
Pompey paid for this theatre to gain political popularity during his second consulship. According to Plutarch, Pompey was inspired by his visit in 62 BC to a Greek theatre in Mytilene. However, this is likely mistaken, as the theatre at Mytilene would have been built into a hill-side and, unlike Pompey's theatre, did not have a scaena. If any inspiration came from the theatre there, it must have been largely reworked or discarded, as Rome's urban geography made such a project unadaptable. Construction began around 61 BC.Prior to its construction, permanent stone theatres had been forbidden, and so to side-step this issue, Pompey had the structure built in the Campus Martius, outside of the pomerium, or sacred boundary, that divided the city from the ager Romanus (the territory immediately outside the city). Pompey also had a temple to Venus Victrix built near the top of the theatre's seating; Pompey then claimed that he had "not [built] a theatre, but rather a temple of Venus to which I have added the steps of a theatre". This was done, according to Tertullian, to avoid censure but the claim should be regarded "as at least half-joking".The sources on the dedication are contradictory. Pliny reports its dedication in 55 BC, the year of Pompey's second consulship. However, Gellius preserves a letter by Cicero's freedman, Tiro that dates the dedication to Pompey's third consulship in 52 BC; in the letter, Pompey requests clarification as to whether to inscribe consul tertio or consul tertium. It may be, however, that different portions of the theatre – the theatre proper, the scaena, and the adjoining temple – were completed at different times.Two performances are associated with the dedication: Clytemnestra by Accius, and  Equos Troianus either by Livius Andronicus or Gnaeus Naevius. Clodius Aesopus, a renowned tragic actor, was brought out of retirement in order to act in the theatre's opening show. The show was also accompanied by gladiatorial matches featuring exotic animals. The showing of Clytemnestra proved an opportunity for Pompey to restage his triple triumph from 61 BC, representing himself both as Alexander the Great and as Agamemnon. Other events were also held around the city in the celebrations, including musical and gymnastic contests along with horse races.
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