One of the nation’s largest predominately black fraternities, Kappa Alpha Psi Fraternity, Inc., is celebrating it’s 100th anniversary in Bloomington, Indiana. The fraternity is hosting week-long events in the city including their 80th Grand Chapter Conclave and a pilgrimage to the campus of Indiana University, where it was founded on January 5th, 1911.

Kappa Alpha Psi was founded under it’s motto “achievement in every field of human endeavor” and has since grown to over 150,000 members in multiple countries. The fraternity is open to men of any ethnicity.

NBC’s WTHR reports that about 30,000 members of Kappa Alpha Psi and their guests will travel to the city this week. Sixty-five buses have been chartered to assist the pilgrimage.

The Indianapolis Convention & Visitors Association estimates that the Kappa Alpha Psi centennial celebrations will bring about $17 Million to the local economy.