and mysterious monument of Baku, the Gyz Galasy", built on solid rock foundation, demonstrates right on the coast line, a fusion of Arabic, Persian and Ottoman influences. It was constructed alongside a natural oil well. It is a cylindrical eight story structure that rises to a height of with a base diameter of . The internal space available in the tower is said to be adequate to accommodate 200 people. A long solid projection to the main tower faces east, which is oriented towards sunrise pointing to the equinoxes, which has led to the conclusion that it was built as an astronomical tower; while the buttress faces east, the door access to the tower faces southeast. Each floor of the tower has a shallow vaulted roof, "a stone cupola" that has a central opening. The thickness of the walls varies from at the base tapering cylindrically to at the top floors. All floors are connected by staircase which abuts the circular wall and are lighted by narrow windows or niches which flare inward. The structure built in stone masonry exhibits varying finished surfaces, which is inlaid with local grey limestone. The alternate courses of stone laid in gypsum plaster gives a black and white banded effect. The northwestern part of the tower retains the original surface finish. There is also a beak-like projection, a buttress, curved in shape, made in masonry. The earliest stonework has square corners. A detailed examination of the construction features of the tower by archaeologists suggests that the stone masonry, both on its interior and exterior surfaces, is diamond-shaped and is seen at the top as well as at the bottom of the tower wall. The diamond-shaped cut seen as a decorative feature, particularly on the outer face of the west side wall, is ornate at the top and plain at the bottom of the wall; a subtle feature noted throughout the tower suggests that it was built as one monolith unit at one period. However, the recent renovations are stated to be crude. Water Well Another notable structure seen in the tower is a water well of diameter, which is deep (its depth is up to the aquifer) that has been discovered at the second floor of the tower. It has an entrance also at the ground level which was discovered by Archaeologist Abbas Islamov during a recent study of the tower. This well has