Costigliole is set on a hill at the embouchure of the Varaita valley and in the past centuries it was chosen by several noble families who built here their residences or holiday houses. The oldest of these buildings, rebuilt like castles on pre-existing ruins, dominate the medieval village: the Castellotto, dating from the end of the 15th century, the Castello Rosso (red castle), dating from the same age, restored in the last century and nowadays turned into a pleasant health farm, and Rejnaudi castle, built in the 17th century by the Counts Crotti on the relics of an ancient fortress and currently under restoration.

In the parish church of S. Maria Maddalena you can see a fresco dating back to the end of the 15th century and ascribed to the famous court painter, Hans Clemer. Beneath, on the provincial road passing through the village, there is Palazzo Giriodi di Monastero, which houses the Town Hall. The portal and the entrance hall, an architectural work by B.A. Vittone (1740), are noteworthy. On the first floor, some halls are embellished with outstanding 18th century decorations featuring fake perspectives (visits on request, phone number 0175/230121). Nearby there is Palazzo La Tour, donated by the Count Tommaso Alberto Saluzzo of Casteldelfino to his bride (mid 18th century).

The "Quagliano" vine, celebrated with the festival taking place every year on the last Sunday of September, and the apricot known as "la tonda di Costigliole" (the round from Costigliole) are typical products grown on the surrounding hills and especially in the hamlet of Ceretto.