In the Temple,
In the portico
καὶ περιεπάτει ὁ Ἰησοῦς ἐν τῷ ἱερῷ ἐν τῇ στοᾷ τοῦ Σολομῶνος.
John uniquely said that Jesus (ὁ Ἰησοῦς) was walking (καὶ περιεπάτει) in the Temple (ἐν τῷ ἱερῷ), in the portico or porch (ἐν τῇ στοᾷ) of Solomon (τοῦ Σολομῶνος). This was the colonnade on the eastern side of the Temple, obviously named after King Solomon (970-931 BCE), the original builder of the Temple.