PHILADELPHIA — Penn Museum, a venerable collector of antiquities, is opening revamped galleries and rebranding as a more public institution after more than a century of focusing on academic research.

The museum, formally called the University of Pennsylvania Museum of Anthropology and Archaeology, has been open to the public since its founding in 1887, but it was mainly used by researchers and academics. That started to change in 2012, when a new director made it a mission to be more accessible to everyone ; it has seen 180,000 visitors a year in the last several years. Now, 10,000 square feet of galleries have been redesigned to rehouse some of the museum’s greatest treasures and provide fresh interpretations of its exhibits from around the world.

Hundreds of objects from its collection of almost one million will go on public display for the first time when the new galleries open, on Saturday.

The museum has also expanded a program in which immigrants and refugees guide visitors through collections that represent their native cultures. Guides from Africa, Mexico and Central America have been added to those from Iraq and Syria.