The church of St Just is medieval. There are no remains of the early medieval church and only part of the chancel remains from the church built in 1334 which was dedicated on 13 July 1336 by the Bishop of Exeter, John Grandisson. The current building dates from the 15th-century. In 1355 the church was given to Glasney College by Sir John de Beaupre together with the church lands of Lafrowda. Medieval chapels in the parish included a chapel of St Helen at Cape Cornwall and a chapel of St Michael on Chapel Carn Brea.
The church is large and built of regular granite blocks. Both the body of the church and the tower are of the 15th-century and the tower is of three stages. The aisles are built to the same design with alternating windows of two different patterns. The arcades have limestone piers. The font is modern but has been described as 14th-century in date. Two medieval wall paintings remain but they are both heavily restored; one portrays St George and the other a warning to breakers of the Sabbath.
The Selus Stone is thought to date from the late 5th or early 6th-centuries. It bears the Latin inscription Selus Ic Iacet (Selus lies here). This is thought to refer to Salomon of Cornwall, otherwise known as Saint Selevan.
References:The Jan Hus Memorial stands at one end of Old Town Square. The huge monument depicts victorious Hussite warriors and Protestants who were forced into exile 200 years after Hus, and a young mother who symbolises national rebirth. The monument was so large that the sculptor designed and built his own villa and studio where the work could be carried out. It was unveiled in 1915 to commemorate the 500th anniversary of Jan Hus' martyrdom. The memorial was designed by Ladislav Šaloun and paid for solely by public donations.
Born in 1369, Hus became an influential religious thinker, philosopher, and reformer in Prague. He was a key predecessor to the Protestant movement of the sixteenth century. In his works he criticized religious moral decay of the Catholic Church. Accordingly, the Czech patriot Hus believed that mass should be given in the vernacular, or local language, rather than in Latin. He was inspired by the teachings of John Wycliffe.