Open House Cork is rated 3 out of 5 in the category architecture & planning. Read and write reviews about Open House Cork. Open House Cork is an annual weekend of free architecture tours. As part of the Open House Worldwide family, it works through a simple but powerful idea: showcasing outstanding architecture for everyone to experience. Buildings that aren’t usually accessible to the public open their doors for one weekend only, with tours provided by expert guides. Open House Cork is funded by donations and is run by volunteers.