Hadrian's Library was built in 132 AD in Athens, Greece, during the reign of the Roman Emperor Hadrian. It served as a cultural center, housing a vast collection of scrolls and manuscripts, and was a place for scholars and citizens to gather and study. The library featured a large courtyard surrounded by rooms for reading and research. It also included a lecture hall and was part of a larger complex that showcased Hadrian's admiration for Greek culture. Today, the ruins of Hadrian's Library can still be seen, reflecting its historical significance in the ancient world.