Boustrophedon is a style of writing in which alternate lines of writing are reversed, with letters also written in reverse, mirror-style. This is in contrast to modern European languages, where lines always begin on the same side, usually the left.
The Forum inscription (one of the oldest known Latin inscriptions) is written boustrophedon, albeit irregularly: reading from top to bottom, lines 1, 3, 5, 7, 9, 11, 12, 14, 16 run from right to left; lines 2, 4, 6, 8, 10, 13, and 15, from left to right; 8, 9, and 16 are upside down. (From a rubbing by Domenico Comparetti.)
Rongorongo tablet highlighting a few glyphs symmetrical through a 180° rotation (reverse boustrophedon)
Notice in Avoiuli script written using boustrophedon
Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek, Dark Ages, the Archaic or Epic period, and the Classical period.
An inscription about the construction of the statue of Athena Parthenos in the Parthenon, 440/439 BC
Ostracon bearing the name of Cimon, Stoa of Attalos