Touro Synagogue was designed by Peter Harrison, a noted British architect and Rhode Island resident. It is considered his most notable work. The interior is flanked by a series of twelve Ionic columns supporting balconies, which signify the twelve tribes of ancient Israel, and each column is carved from a single tree. The building is oriented to face east toward Jerusalem. The ark containing the Torah is on the east wall; above it is a mural representing the Ten Commandments in Hebrew, which was painted by Newport artist Benjamin Howland.