Complex sentence: Inside, the greatest interest of the church resides in its Romanesque section: transept and apse were included in supplementary inventory of "Monument historique" by decree of 24 April 1925.
Split into simpler sentences: Inside, the greatest interest of the church resides in its surviving Romanesque features. The transept and apse were included in supplementary inventory of "Monument historique" by decree of 24 April 1925.