The Temple

Roman temple

Ancient Roman temples are among the most visible archaeological remains of Roman culture, and are a significant source for Roman architecture. Their construction and maintenance was a major part of ancient Roman religion. The main room housed the cult image of the deity to whom the temple was...

 of Castor

Castor and Pollux

In Greek and Roman mythology, Castor and Pollux or Polydeuces were twin brothers, together known as the Dioscuri . Their mother was Leda, but Castor was the mortal son of Tyndareus, king of Sparta, and Pollux the divine son of Zeus, who visited Leda in the guise of a swan...

 and Pollux

Castor and Pollux

In Greek and Roman mythology, Castor and Pollux or Polydeuces were twin brothers, together known as the Dioscuri . Their mother was Leda, but Castor was the mortal son of Tyndareus, king of Sparta, and Pollux the divine son of Zeus, who visited Leda in the guise of a swan...

is an ancient edifice in the Roman Forum

Roman Forum

The Roman Forum is a rectangular forum surrounded by the ruins of several important ancient government buildings at the center of the city of Rome. Citizens of the ancient city referred to this space, originally a marketplace, as the Forum Magnum, or simply the Forum...

, Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

, central Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

. It was originally built in gratitude for victory at the Battle of Lake Regillus

Battle of Lake Regillus

The Battle of Lake Regillus was a legendary early Roman victory, won over the Latin League led by the expelled Etruscan former king of Rome. It is usually said to have occurred in 498 BC, but other dates have been proposed, including 499 BC, 496 BC and 493 BC.The battle may be entirely legendary,...

 (495 BC

495 BC

Year 495 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Sabinus and Priscus...

). Castor and Pollux (Greek Polydeuces

Polydeuces

Polydeuces may refer to:*Polydeuces , a moon of Saturn*An alternative name for the Greek mythological hero Pollux...

) were the Dioscuri, the "twins" of Gemini, the twin sons of Zeus

Zeus

In the ancient Greek religion, Zeus was the "Father of Gods and men" who ruled the Olympians of Mount Olympus as a father ruled the family. He was the god of sky and thunder in Greek mythology. His Roman counterpart is Jupiter and his Etruscan counterpart is Tinia.Zeus was the child of Cronus...

 (Jupiter

Jupiter (mythology)

In ancient Roman religion and myth, Jupiter or Jove is the king of the gods, and the god of the sky and thunder. He is the equivalent of Zeus in the Greek pantheon....

) and Leda

Leda (mythology)

In Greek mythology, Leda was daughter of the Aetolian king Thestius, and wife of the king Tyndareus , of Sparta. Her myth gave rise to the popular motif in Renaissance and later art of Leda and the Swan...

. Their cult came to Rome from Greece via Magna Graecia

Magna Graecia

Magna Græcia is the name of the coastal areas of Southern Italy on the Tarentine Gulf that were extensively colonized by Greek settlers; particularly the Achaean colonies of Tarentum, Crotone, and Sybaris, but also, more loosely, the cities of Cumae and Neapolis to the north...

 and the Greek culture of Southern Italy.
The last king of Rome, Lucius Tarquinius Superbus

Lucius Tarquinius Superbus

Lucius Tarquinius Superbus was the legendary seventh and final King of Rome, reigning from 535 BC until the popular uprising in 509 BC that led to the establishment of the Roman Republic. He is more commonly known by his cognomen Tarquinius Superbus and was a member of the so-called Etruscan...

, and his allies, the Latins, waged war on the infant Roman Republic.