The Towers of Stone and Pearl

The The Towers of Stone and Pearl is the collective name for a series of structures built by Kristoff Dandelion, between 861HY and 880HY. The towers are not strictly all towers, but all (but one) were made as military emplacements or magical research towers, but nearly all have fallen into states of disrepair.
In no particular order, the structures are:

• The Tower of Gold - also known as the Trident Throne, the tower was built in Eymir as a monument to King Ramyas.
• The Tower of Ivory - created in Eymir as a research facility for the Scarlet Band, then converted into a military outpost
• The Tower of Silver - also known as the Mirror of Agaletia, this tower and its adjoining complex in Mirand was used as a research station for the Scarlet Band, and fell into disrepair after The Splitting of the Three.
• The Tower of Brass - a military outpost located in Kingdom of Padua that is still in use.
• The Tower of Pearl - a magical research facility, long since abandoned, located on an uncharted island in Damir.