There is a small, but nice, museum at Pamukkale (ancient Hierapolis, Colosians 4:13). It is housed in a second century Roman bath house. The exhibits indicate a large Roman presence in the area during the second and third century A.D.
The museum has the nicest statue of the “god” Hades that I have seen.
Hades was known in Greek mythology as the lord of death and the god of the underworld or nether world. The term hades is used in the New Testament of the abode of the souls of the wicked prior to the judgment. Note the comments by William Hendriksen.
As to the word “hell,” which here in the original is Gehenna (and so also in [Matthew] 5:22, 29, 30; 18:9; 23;15, 33; Mark 9:43-47; Luke 12:5; James 3:6), it generally refers to the abode of the wicked, body and soul, after the judgment day. When the same abode is called Hades the references is to the time before the judgment day, though Hades also has other meanings in Scripture. (New Testament Commentary: Exposition of the Gospel According to Matthew 472).
The Book of Revelation makes it clear that Jesus has control over both Death and Hades.
When I saw Him, I fell at His feet like a dead man. And He placed His right hand on me, saying, “Do not be afraid; I am the first and the last, and the living One; and I was dead, and behold, I am alive forevermore, and I have the keys of death and of Hades. (Revelation 1:17-18 NAU; see also 6:8; 20:13, 14)