The sacred protector of the city was the hero/god Trophonios, whose oracle, involving a harrowing descent into an underground chamber, was famous beyond the borders of Greece. At the springs of the Herkyna river are shallow grottos with niches and marble remnants said to be the site of the oracle. On the hill above is a small medieval castle, mostly the work of the Catalan Company during the 14th century, accessible by foot.
Further west, commanding a dramatic view from the hill of Profitis Ilias, are the remains of a large temple of Zeus Basileus, perhaps begun in the 3rd century BC but never completed.
The cathedral church of St. George houses an important relic, a head of St. George, translated to Venice in the 15th century but restored to Livadeia as a gesture of interfaith cooperation in 1999.
In medieval times the river was lined by a series of water mills, one of which is preserved.