As Siddhartha, he renounced his family at the age of 29 in 534 BC and travelled and meditated in search of truth. After meditating for six years at Urubela (Buddhagaya) in Gaya, he attained Buddhatva or enlightenment. Enlightenment is a state of having infinite knowledge, and being able to accomplish the Noble and Universal truths. By gaining enlightenment, you enter Nibbana, in which the final stage is Parinibbana.
At this place, the Buddha was abandoned by the five men who had been his companions of earlier austerities. All they saw was an ordinary man; they mocked his well-nourished appearance. “Here comes the mendicant Gautama,” they said, “who has turned away from asceticism. He is certainly not worth our respect.” When they reminded him of his former vows, the Buddha replied, “Austerities only confuse the mind. In the exhaustion and mental stupor to which they lead, one can no longer understand the ordinary things of life, still less the truth that lies beyond the senses. I have given up extremes of either luxury or asceticism. I have discovered the Middle Way”. This is the path which is neither easy (a rich prince) nor hard (living in austere conditions practicing self-denial). Hearing this, the five ascetics became the Buddha’s first disciples in Deer Park, Sarnath, 13 km north east of Varanasi (Banares).
The disciples of Gautama Siddhartha began to visit the place during the full moon in the month of Vaisakh (April–May), as per the Hindu calendar. Over time, the place became known as Bodh Gaya, the day of enlightenment as Buddha Purnima, and the tree as the Bodhi Tree.
The history of Bodh Gaya is documented by many inscriptions and pilgrimage accounts. Foremost among these are the accounts of theChinese pilgrims Faxian in the 5th century and Xuanzang in the 7th century. The area was at the heart of a Buddhist civilization for centuries, until it was conquered by Turkic armies in the 13th century. The place-name, Bodh Gaya, did not come into use until the 18th century CE. Historically, it was known as Uruvela, Sambodhi, Vajrasana or Mahabodhi. The main monastery of Bodh Gaya used to be called the Bodhimanda-vihāra (Pali). Now it is called the Mahabodhi Temple.
Kittisirimegha of Sri Lanka, a contemporary of Samudragupta, erected with the permission of Samudragupta, a Sanghārāma near the Mahābodhi-vihāra, chiefly for the use of the Singhalese monks who went to worship the Bodhi tree. The circumstances in connection with the Sanghārāma are given by Xuanzang who gives a description of it as seen by himself. It was probably here that Buddhaghosa met the Elder Revata who persuaded him to come to Ceylon.
Several Buddhist temples and monasteries have been built by the people of Bhutan, China, Japan, Myanmar, Nepal,Sikkim, Sri Lanka, Taiwan, Thailand, Tibet and Vietnam in a wide area around the Mahabodhi Temple. These buildings reflect the architectural style, exterior and interior decoration of their respective countries. The statue of Buddha in the Chinese temple is 200 years old and was brought from China. Japan’s Nippon temple is shaped like a pagoda. The Myanmar (Burmese) temple is also pagoda shaped and is reminiscent of Bagan. The Thai temple has a typical sloping, curved roof covered with golden tiles. Inside, the temple holds a massive bronze statue of Buddha. Next to the Thai temple is 25 meter statue of Buddha located within a garden which has existed there for over 100 years.