Hai phong: Cuong Xa Pagoda in Tan Hung ward of northern Hai Phong city has been recognised as the temple with the largest system of stone walls engraved with the Buddhist swastika symbol in Asia by the Asia Book of Records. The pagoda's distinctive stone wall system is built from green stone sourced from Nhoi Mountain in central Thanh Hoa province. Each horizontal row comprises 108 blocks, each measuring 40cm in length, 30cm in width and 35cm in thickness, with an average weight of around 80kg.

According to Vietnam News Agency, the first three rows of the stone walls are intricately carved with lotus motifs. From the fourth row upward to the roofline, each stone is engraved with a gilded swastika symbol. In total, nearly 3,000 such symbols adorn the structure, creating a striking synthesis of architectural scale, sculptural craftsmanship, and Buddhist symbolism.

In August 2015, the pagoda was recognised by VietKings as the first in Vietnam to feature stone walls engraved with the swastika symbol.