What are the names of the two towers in the Lord of the Rings universe?

In J.R.R. Tolkien's epic high fantasy novel, The Lord of the Rings, the two towers are Orthanc and Barad-dûr.

Orthanc was a black tower located in the fortress of Isengard, and it was originally built by the Men of Gondor. The tower was taken over by Saruman the White, a powerful wizard who was corrupted by the evil of Sauron. Saruman used the tower as his stronghold and breeding ground for his army of Uruk-hai, which he intended to use to conquer Middle-earth.

Barad-dûr, on the other hand, was the dark tower of Sauron, the main antagonist of the story. It was located in the land of Mordor, and it was the ultimate symbol of Sauron's power and domination over Middle-earth. The tower was destroyed by Frodo Baggins and Samwise Gamgee in the climax of the story, which ultimately led to the defeat of Sauron and the destruction of the One Ring.

The two towers in the Lord of the Rings universe are Orthanc and Barad-dûr. Orthanc is located in Isengard, while Barad-dûr is located in Mordor.

Orthanc is a tall, white tower made of stone. It was built by the Númenóreans and later taken over by Saruman. Saruman used Orthanc as his base of operations during the War of the Ring.

Barad-dûr is a black, conical tower that is the stronghold of Sauron. It is the tallest structure in Middle-earth and is said to be indestructible.

Both Orthanc and Barad-dûr are powerful symbols of the forces of evil in Middle-earth.