4 major temples are associated with various stages of the life of Gautama Buddha. It's at Mahabodhi temple, under the bodhi tree, where Buddha sat and meditated and obtained Nirvana or Enlightenment. Therefore, it is this very site that marks the birth of all the beliefs that belong to Buddhists. The holy Bodhi tree that Buddha meditated under, is claimed to have grown from a sapling from the Sri Maha Bodhi tree in Sri Lanka. It is believed that this temple is located right at the centre of the Earth; thus, the only location that is able to bare the amount of spiritual weight and therefore, at the end of time, this will be the last place to be destroyed and the very first place that will be reborn into the new world and time.
The temple was built in the 6th century CE and is known to be King Asoka's greatest achievement. The first construction of the temple was a "diamond throne" which depicts the exact spot Lord Buddha was seated on when he gained Nirvana. Every Buddhists venerate this temple as the exact model of Lord Buddha.
The temple was rebuilt later on under the Gupta Empire, which is well seen from its current architecture. There are many ornate decorations and carvings representing Buddhist and some Hindu symbols, all over the temple.