What architectural feature characterizes Nan Madol?

Nan Madol is renowned for its distinctive architectural feature of artificial islands interconnected by a network of canals. This site, located in the Federated States of Micronesia, was built using large basalt stones and is often described as a "Venice of the Pacific." The islands serve as a foundation for ceremonial and residential structures, with water flowing between them, providing both a defensive measure and means of transportation.

The construction technique exemplifies the ingenuity of the Saudeleur dynasty, which ruled the area between roughly 1100 and 1628 AD. The unique layout demonstrates the advanced engineering capabilities of the culture and their adaptation to the marine environment. Each island's function was specific, often related to governance, ritual, and community life.

In contrast to this, options such as intricate mosaics, high-rise buildings, or stone carvings do not accurately characterize Nan Madol. While there may be decorations or carvings within the structures, they are not the defining feature of the site. The primary hallmark remains the artificial islands and the canals that connect them.