Open House Dublin is the popular annual weekend of free architecture tours, brought to you by the Irish Architecture Foundation - for their 2020 edition, they offered a choice mix of illuminating onsite and online events. 

Above, they take a look at the architectural history of Marsh's Library, founded in the early eighteenth century by Archbishop Narcissus Marsh, and the first public library in Ireland - today, it still welcomes visitors, tourists and scholars from across the globe. 

Take more virtual tours with Open House here.