The book of Revelation is the only biblical book that is wholly composed of apocalyptic literature.
The book is frequently called by the incorrect name Book of Revelations.
However, the actual title of the book is The Revelation of Jesus Christ ... unto his servant John,
as it is rendered in the first verse.

The visions of The book of Revelation.

The first vision (chs. 1:11–3:22), related by "one like unto the Son of man, clothed with a garment down to the foot,
and girt about the paps with a golden girdle", speaking with "a great voice, as of a trumpet",
are statements addressed to the seven churches of Asia.

The second vision comprising the rest of the book (chs. 4–22) begins with "a door … opened in heaven"
and describes the end of the world- involving the final rebellion by Satan at Armgeddon,
God's final defeat of Satan, and the restoration of peace to the world.