Ivy Day is a series of annual ceremonies in which an ivy stone is placed on either a residential, academic or administrative building or ground to commemorate academic excellence. The ceremony is most known for being practiced among older colleges in the Northeastern United States. It is most associated with the Ivy League and a group of small liberal arts college known as the Little Ivies. Some institutions announce members of Phi Beta Kappa and specialized honor designations for students. Some classes donate to the college, in the form of gates, facades, and door outlines, by inscribing or creating their own version of symbolic icons of the college's seal or other prominent insignia. The ivy stones are usually decorated with the graduation date and a symbol that represents the college as a whole or the class as a whole. The most common ivy stone is one-by-two feet and is usually made out of workable stone.