The controversial Dun Laoghaire Rathdown Lexicon building has been shortlisted for this year's Irish Architecture Awards.
The library, which opened its doors six months ago, will be facing competition in the Public Choice category from the Mater Misericordiae University Hospital and the newly-restored St Mel's Cathedral in Longford.
The €36.6m seafront library attracted a variety of criticism during its construction, including public calls for it to be demolished. Others were critical of its cost during a time of economic crisis while its facade and size were also controversial.
Project architect of the DLR Lexicon, Louise Cotter, told the Herald the team was thrilled with the news from the Royal Institute of Architects of Ireland.
"We're absolutely delighted. The building has been really successful since it opened to the public," she said. "It's incredible how every seat is filled every single day and people are really enjoying it, especially young people."
Speaking of the criticism the library received, Ms Cotter said it was all in the past.
"That blew over. We didn't pay too much attention to it. We're happy the public like the building," she said.
Other designs included in the Public Choice category include the Dalkey Heritage Centre & Town Hall, Athlone Community College and the Pavilion of Light at Mardyke Gardens.