The Lord of the Rings: The Two Towers - The Tower of Orthanc and the Tower of Minas Morgul (formerly Minas Ithil)

According to letters to his publisher and his notes, J.R.R. Tolkien meant The Two Towers to refer to The Tower of Orthanc and the Tower of Minas Morgul (formerly Minas Ithil).

Two panels:

The Tower of Orthanc - In the center of Isengard was built the black, impenetrable tower home of Saruman built by the Dunedain. Four piers of stone hardened by an unknown process with three horns a top them and the sign of the white hand underneath. The only entrance to the tower was reached by twenty-seven stairs below a balcony with many windows higher up.

The Tower of Minas Morgul, originally Minas Ithil, built by the men of Gondor. The principal city of the southern realm and the high seat of Isildur. Its walls gleamed silver and, being a walled city of white marble on a high shelf of rock. The white houses and tall tower had many windows. The Top of the tower revolved slowly back and forth with a thin crescent moon of marble and silver above the top spire.