Friday marks the ninth anniversary of Hurricane Katrina making landfall on the Gulf Coast. It annihilated communities and dramatically changed the lives of people in Mississippi and Louisiana.Watch reportNumerous events will take place across the city, including a wreath laying ceremony in Mid-city.SEE ALSO: Margaret Orr: Looking back, looking ahead 9 years after KatrinaMayor Mitch Landrieu was joined by other city leaders and U.S. Secretary of Housing and Urban Development Julian Castro. During the ceremony, a wreath will be placed at the tomb of the nearly 100 unclaimed or unidentified Hurricane Katrina victims.This site was built back in 2008 to honor those men and women who lost their lives during the devastating storm, and to provide them with a final resting place."As Gen. Honoré said this morning, and he was right, if you're poor or if you're in poverty you can't really be free. And freedom is really what we all aspire to. And we in New Orleans, the thing that makes us special, is we're all one," Landrieu said. "That's what the special recipe is for the gumbo that everybody in the world likes to eat--about who we are. I think we just have to recommit ourselves to that and use this day to do it."Landrieu said that resilience has brought New Orleans a long way, but also said that in order to move forward, everyone must work together, such as HUD's Castro.Landrieu said his second visit to the city since being confirmed to that position illustrates the president's and his administration's commitment to rebuilding the Crescent City."There is so much that the people of New Orleans should be proud of," Castro said. "We have been proud to be a partner in that progress and we know that we're going to be there every step of the way to continue that."Several other Hurricane Katrina memorial events happening across the city today:* Delgado Community College will host a ribbon cutting at the Sidney Collier campus. The program begins at 9:52 a.m. to commemorate the time the Florida-Desire neighborhood, where the campus is located, began flooding on Aug. 29, 2005. This building will replace the former Louisiana Technical College Sidney Collier campus that was devastated by flooding and later demolished. The event will start at 3727 Louisa St.* A Katrina memorial mass is scheduled in the Marigny at noon at the Bishop Center on the corner of Dauphine and Touro. Father William F. Maestri will perform the mass that is open to people of all faiths.*Beacon light church will have the ribbon cutting of their new cathedral. The site was one of several New Orleans churches devastated by Hurricane Katrina. This marks the church’s return to Gentilly after nine years. Mayor Landrieu and Interim New Orleans Police Department Superintendent Michael Harrison are set to attend. The ceremony will start at 6 p.m. at 1937 Mirabeau Ave.*The Zulu Social Aid and Pleasure Club is inviting the public to join them as they open the doors of their new Zulu hall, the Roy E. Glapion, Jr. Building.  Members say Hurricane Katrina caused membership to drop 80 percent and the building was severely damaged.  The event starts at 7 p.m. at 732 North Broad St.Related:Margaret Orr: Looking back, looking ahead 9 years after KatrinaYWCA organizers hold pre-groundbreaking event for new facilityPlans unveiled for proposed memorial to levee breach in Gentilly area