Torah ark

The Torah ark, also known as the hekhal or aron kodesh, is a ornamental chamber in a synagogue that houses the Torah scrolls. The ark is placed in a recess in the wall, facing Jerusalem, and worshipers face this direction when reciting prayers. The ark is often closed with a parochet, a curtain placed either outside or inside the doors, and is usually inscribed with verses from Jewish scripture. The ark is considered the second holiest part of a synagogue, after the Torah scrolls themselves, and worshipers often stand and face the ark during certain prayers and services. There is no actual obligation to remain standing when the ark is open, but it is a universally accepted custom.learn more on wikipedia