Hellenistic art
At that time they liked to make very big things.  The second temple of Apollo at Didyma was like that.  It was twenty kilometers from Miletus in Ionia.  Daphnis of Miletus made the design for it at the end of the fourth century B.C. (about 300  B.C.) but it was never finished.  They continued building it until the 2nd century A.D. (past 100 A.D.).  The sanctuary (special part of the temple) is one of the largest ever made near the Mediterranean.  Inside a very big room, the cella has two rows of columns (tall round things) around it.  The columns are the Ionic kind, almost 20 metres tall, with much complex stone art on the bases and tops.