Oxford Dictionary
centrepiece
centrepiece |ˈsɛntəpiːs |(US centerpiece ) ▶noun an ornament or display placed in the middle of a dining table. • an item, issue, etc. intended to be a focus of attention: a domestic programme with health care as the centrepiece.
Oxford Thesaurus
centrepiece
centrepiece noun the tower is the centrepiece of the park: highlight, main feature, high point, high spot, best part, climax; focus of attention, focal point, centre of attention /interest, magnet, cynosure; most prominent element, central component, nucleus, heart, core, hub, kernel.