Revelation 17:11

Evidently the beast is one of the seven in the sense that his first kingdom is on a par with the seven major empires just mentioned. He is the eighth in that he establishes an eighth major empire with a worldwide government after he revives a previously dead nation having received supernatural powers from Satan. This explanation views the beast’s kingdom before his revival as the seventh kingdom and his kingdom after these events as the eighth. [Note: Thomas, Revelation 8-22, p. 299.] A variation of this view sees the seventh kingdom as the revived Roman Empire and the eighth as the beast’s kingdom, which comprises the revived Roman Empire and all other nations. [Note: Walvoord, The Revelation . . ., p. 254.] Beale explained the eighth as "another way of referring to his future attempted mimicry of Christ’s resurrection." [Note: Beale, p. 875. Cf. Johnson, pp. 560-61. For refutation of the preterist view that Nero is in view, see Mark L. Hitchcock, "A Critique of the Preterist View of Revelation 17:9-11 and Nero," Bibliotheca Sacra 164:656 (October-December 2007):472-85.]

Jesus Christ will destroy the beast and his (eighth) kingdom when He returns to the earth. It will not just "fall" to a conquering kingdom as the other major empires did (cf. Daniel 2:44).