As far as sanctuaries to Apollo go the oracular Temple at Didyma is second only to temple of Delphi in Greece. Here on the Ionian coast lies a temple of monumental size, i.e. the visitor will lose their sense of scale standing near it.
The Temple of Apollo here in Turkey is an example of fine ornate Hellenistic architecture. The columns are so large and numerous they resemble the Temple of Karnak in Luxor, Egypt. The columns are robust and grandly decorated with decorated bands on the bases. For architecture buffs they are simply mesmerizing.
Take the time to visit the town that surrounds the site. Tourist restaurants and gift shops seem to be more interested in portraying good Turkish hospitality than with making a Lira.