Revelation 1:11

Asia : A Roman province on the west side of Asia Minor.
(39° 13´, 32° 43´)

Ephesus : a town in western Asia Minor at the mouth of the Cayster River
(37° 57´, 27° 22´)

Laodicea : residents of the town of Laodicea
(37° 46´, 29° 3´)

Omega : the last letter of Greek alphabet

Pergamum : a wealthy ancient town in the disrict of Mysia in northwest Asia Minor. It is now modern Bergama.
(39° 7´, 27° 9´)

Philadelphia : a town in Lydia in the western part of Asia Minor
(38° 20´, 28° 31´)

Sardis : the capital city of the province of Lydia in Asia Minor
(38° 28´, 28° 6´)

Smyrna : a city Located on the west coast of Asia Minor, it is now called Izmir.
(38° 27´, 27° 9´)

Thyatira : a town in Asia Minor 30 km southeast of Pergamum
(38° 55´, 27° 51´)

Revelation 1:17-18

Alpha : a title of Jesus Christ

Hades : the place of departed spirits (NIV notes); the unseen world (YC)