At the turn of the century, women were rare in the field of architecture—something that, while certainly improved, remains a deeply unfortunate reality of the profession that urgently requires attention and remediation.

A notable exception was Ethel Mary Charles, the first women to join the Royal Institute of British Architects (RIBA), helping pave the way for the thousands of women who’ve followed in her footsteps. On July 5, 2017, RIBA celebrates Charles with #EthelDay, a day of international social media campaigning to recognize the indelible mark that women have left in the field since her day.

RIBA encourages everyone to share a picture of a film of a woman architect you find inspiring (and/or one of their designs), with the hashtag #EthelDay.

“I encourage architects, students and their educators, design professionals and enthusiasts from around the world to join me in celebrating the contribution of women in architecture,” states Jane Duncan, RIBA President and founder of International Women in Architecture Day. “Whether you participate on social media with our #EthelDay campaign by sharing a photograph of an inspiring woman architect, host a Wikipedia ‘edit-a-thon’ to improve the visibility of women architects, or host a special event in your office or college, I can’t wait to hear about it. Let’s get the world celebrating the talent, ideas and creations of inspiring women in architecture.”