The Church of Sant’Anastasia can be found in Tissi.
In 1175, a document clarified its title and ownership to the Vallombrosians abbey of San Michele di Plaiano.
The church, built with medium-sized limestone ashlars, can be attributed to a Tuscan workforce active in the Giudicate of Torres around the middle of the XII century.
Originally, the church had a single nave layout with apse to the south-east.
In the XVII century, the building underwent a number of changes: the sides were demolished to build a series of seventeenth-century chapels and to provide entry to the sacristy.
Only the facade of the Romanesque church has remained intact.
The facade is framed by wide corner blocks, which weld onto the flat talus base and the arches of the pitched roofs. In addition to this, it is articulated into three transoms by two half-pilasters which start from the ground and reach the top part. Other two, slimmer half-pilasters reach as high as the top, they too joined up by arches parallel to the pitched roofs.
To the side, in the two transoms, two crosses are embellished in dark volcanic rock which stand out against the clear background.
In the centre of the facade, a portal opens out, it too changed in the XVII century, above which a window probably opened out which has now been walled over.
