The closures are to facilitate Joe Biden's visit
Dublin Zoo will be closing early tomorrow and will remain shut on Thursday to facilitate the US President's visit.
The Phoenix Park itself will close at 5pm tomorrow and re-open at 5pm on Thursday - after Joe Biden has left.
OPW staff will close all gates, including pedestrian entrances, until it is 'safe to do so.'
Dublin Zoo says essential workers have been given passes to make sure animals are cared for as normal.
The US President will not be visiting the zoo.

Local TD Accepts Data Centres Are A "Particular Issue" In Ireland
Katie Taylor Tickets Sell Out for Croke Park Final Fight In September
New Digital Wallet Might Be Needed To Access Pornography Online
Two Men Arrested As Gardaí Seize Firearm And Drugs In Blanchardstown
Trial Of Man Accused Of Attempted Murder Of Three Children Will Be Shown CCTV Today
Second Night Of Riots In Belfast
Victim Loses Eye After Attempted Murder In Belfast On Monday
Report Finds Over 95,000 Children Are In Poverty