Wikipedia
The Prayer Tower is a late Googie design-influenced tower located on the campus of Oral Roberts University in Tulsa, Oklahoma. The 200 ft (60.9 m) glass and steel structure, designed by Tulsa architect Frank Wallace, opened in 1967. An enclosed observation deck gives a 360° view of the surrounding area and enables a self-guided visual tour of the ORU campus. The landscaped Ralph L. Reece Memorial Gardens surround the tower base. The tower is a popular local tourist attraction.
Usage examples of "prayer tower".
It looked like a fallen prayer tower or a giant's house key or some necessary part of a celestial instrument of music that had slipped free of a starry constellation and dropped to the ground.
A little later he came to a place he recognized: a seven-sided polygon with alleyways radiating from the corners, a tiled doorway set into a blue-painted wall with a prayer tower spearing the sky at one corner.