The tomb,built in 1615 is a forerunner of the famous Taj Mahal : it is octangle, with a huge dome in the centre surrounded by eight
Kaynak: Anarkali

In 1561–1564 the top part of the quadrangular tower was disassembled, and three floors re-erected in the form of an octangle .
Kaynak: Tower of St. Olav

The upper pond is an octangle with water of the best quality. It has such a high surface tension that the water can brim several
Kaynak: No. 2 Spring in China