Chiesa di San Giovanni in Tuba

Beside the Timavo springs, the church of San Giovanni in Tuba preserves a late-Gothic structure above the remains of a fifth-century basilica. Reused Roman inscriptions and patches of mosaic floor reveal the site's much earlier religious history.

Why it matters

The church stands at a place of worship dating back to antiquity. A Roman inscription records a shrine to Spes Augusta, while the fifth-century basilica that followed had a polychrome mosaic floor. The present church, built for the counts of Walsee between 1399 and 1472, carries this long sequence into the medieval period.

What to notice

The late-Gothic church has a single nave and polygonal apse. In the presbytery, surviving sections of the fifth-century mosaic show geometric motifs, including octagons and Solomon's knots. Reused epigraphic fragments include the dedication to Spes Augusta by Sacconio Varrone, a tribune of a Dalmatian cohort. A bell tower completed in 1642 stands beside the church.

Context and history

A paleo-Christian basilica was built here around the middle of the fifth century, and a Benedictine monastery later stood nearby. After the complex was damaged during invasions, rebuilding began in 1112 under Patriarch Voldorico, an episode recalled by a carved inscription. The present church was restored in 1519 and suffered damage in both world wars; postwar rebuilding in the late 1940s restored its Gothic form. The name “Tuba” has been connected either to nearby tombs or to the Latin word for a conduit, a reference to the water below.