Circular Churchyard & Pillar Sundial at Church of St.Tysilio

The Circular Churchyard and Pillar Sundial at the Church of St. Tysilio was built between 1867 and 1868 by architect G.E. Street in the Early English to Early Decorated style, at a cost of £2,400. The church is constructed from greenish-grey Welshpool stone, featuring snecked, rock-faced blocks with Cefn stone dressings. It has a drip course below the windows, a slate roof with a crested ridge, and cross finials. The structure includes a nave with a north aisle, an inset chancel, and a south timber porch on a stone plinth. The round northwest tower has an arcaded belfry with trefoil-headed lights and a conical cap. A paired lancet window in the south wall of the chancel is inscribed with "AMDG 1868" around a quatrefoil decoration at the apex.

The churchyard is circular and of early origin, containing some chest tombs. Near the south porch, there is a reset stone pillar sundial dating from 1760.

Inside, the north arcade features four tall pointed arches on round piers, and there is a cusped arch in the north chancel wall leading to the vestry. The roof is arch-braced and cusped. A Caen stone reredos by T. Earp includes a central slab of "Rouge Royal" marble flanked by arcaded panels. The north wall of the chancel contains a double piscina and sedile. There is a circular pulpit made of six Gothic panels and an octagonal font with foliated arches, both crafted from Bath stone. Other fittings include stone cancelli, a wrought iron lectern, an altar table and rails, candelabra, and stalls, all designed by Street.

The stained glass includes a three-light window in the east, bordered in white, from 1868 by Clayton and Bell, designed by Street. The nave features a three-light window from 1879 by Powells of Blackfriars West, and paired lancets from 1868 by Clayton and Bell. The north side has paired lancets from 1898 by Curtis Ward-Hughes of London. A brass plate on the west wall commemorates Mary Eyton of Rhysnant (d. 1674) with engraved heroic couplets and classical decoration. There is also a tablet to the Lloyd family dated 1779. The church houses a single 4cwt bell made by Rudhall of Gloucester in 1729.