The Kennet and Avon Canal follows the river and passes the village.

[2] The toponym is derived from Old English and means "the enclosure (tūn) of Afa's people".

It consists of only a nave, chancel and late 19th-century north transept.

The font is a notable piece of Romanesque sculpture and may be Saxon.

[5] A few early Gothic additions to the church were made in the 13th century, including two doorways and a "low-side" window.