Stylobate

Triple-stepped crepidoma with stylobate at top, in the Doric Temple of Segesta, Sicily

The Roman Maison Carrée, Nîmes, illustrating the Roman version of a stylobate

In classical Greek architecture, a stylobate (Greek: στυλοβάτης) is the top step of the crepidoma, the stepped platform on which colonnades of temple columns are placed (it is the "floor" of the temple). The platform was built on a leveling course that flattened out the ground immediately beneath the temple.

Some methodologies use the word stylobate to describe only the topmost step of the temple's base, while stereobate is used to describe the remaining steps of the platform beneath the stylobate and just above the leveling course. Others use the term to refer to the entire platform.

The stylobate was often designed to relate closely to the dimensions of other elements of the temple. In Greek Doric temples, the length and width of the stylobate were related, and in some early Doric temples the column height was one third the width of the stylobate. The Romans took a different approach in their interpretation of the Corinthian order, using a much loftier stylobate that was not graduated except in the approach to the portico.