On Wednesday, President Barack Obama will step foot in the Islamic Society of Baltimore.
It will be the first time he's visited a U.S. mosque during his presidency, although he's been to several overseas.
There haven't been many other presidents who have visited U.S. mosques while in office.
Several other presidents have given speeches at performance halls called mosques. But those were Arabic-style buildings not connected to the Islamic faith.
Muslim leaders have encouraged Obama to visit a U.S. mosque in the past. He's advocated for tolerance and acceptance toward Muslims throughout his terms.
This video includes images from Getty Images and Library of Congress.