This is one of the earliest Buddhist temples built entirely in brick and is one of the four holy sites related to the life of the Lord Buddha
The Mahabodhi Temple (literally: "Great Awakening Temple"), a UNESCO World Heritage Site, is an ancient, but much rebuilt and restored, Buddhist temple in Bodh Gaya, marking the location where the Buddha is said to have attained enlightenment.
What is now visible on the ground essentially dates from the 7th century CE, or perhaps somewhat earlier, as well as several major restorations since the 19th century. But the structure now may well incorporate large parts of earlier work, possibly from the 2nd or 3rd century CE.
The temple complex includes two large straight-sided shikhara towers, the largest over 55 metres (180 feet) high. This is a stylistic feature that has continued in Jain and Hindu temples to the present day, and influenced Buddhist architecture in other countries, in forms like the pagoda. - in: wikipedia