The whole village is a striking example of traditional architecture. The way public areas are organized, the well-preserved stone streets and the stone-built buildings serve as proof of the economic and social boom of Nymfaio village in the past.

The evolution of the buildings is categorized into three construction phases: a. From the late 18th to the early 19th century homes are shaped like a " Γ", " Π" or rectangular. b. in the second half of the 19th century, the form of the houses is influenced by the classicist standards of major Greek towns. c. In the interwar period houses are “flat” surfaces with a balcony on the first floor and a  pediment.

The mansions of Nymfeo village have fireplaces in all rooms and rich paintings: ancient gods, Alexander the Great, philosophers, landscapes from other countries such as the Pyramids of Egypt, allegorical representations of the seasons, copies of famous Renaissance paintings etc.

The most well-known mansions are the ones of Tsirli, Boutari and Sossidis families. The most imposing building of the town is undoubtedly the Nikios School, built in 1928 with plans brought from Sweden. Today the school houses the Information Center for the Brown Bear Arcturos.