The Dublin Portal will now also broadcast two additional cities, Dublin City Council has announced.
Vilnius in Lithuania and Lublin in Dublin have been added to the Dublin Portal Network.
The two additional installations already broadcasted each other, but Ireland will now offer a glimpse into three international cities.
The livestreams will rotate every 180 seconds, beginning from 1pm today Irish time, according to Dublin City Council.
The Vilnius installation is positioned adjacent to the city's central station, and the Lublin piece is located on the central city square, Litewski Square
Lord Mayor James Geoghegan said the Portal attracted 340,000 visitors since its launch in May and he is “delighted” to expand the attraction to Lithuania and Poland.
Deputy Mayor of the City of Lublin Beata Stepaniuk-Kuśmierzak said she is excited the Portal project is “growing in reach and popularity”.
“Thanks to the installation, we can now peek into New York's Manhattan and Dublin's city centre, share culture, experiences and initiate new projects together,” she said.
Portal creator Benediktas Gylys said he is “thrilled” the four installations have “finally” connected to one another.
“The installation’s mission is about building multiple Portals, which together form a global entity,” he said.
“A bridge to a united planet that invites people of distant cultures to meet above borders, differences and narratives.
“It took us eight years to arrive at this special day and we are grateful for the consistent support from our partners in Dublin, New York City, Vilnius, and Lublin.
“The current four Portals form the foundation of a network that will expand later this year, bringing Portals to even more countries around planet Earth.”
The Dublin installation was launched in May – but did not have the smoothest beginnings.
Shortly after its launch, DCC temporarily shut down the installation due to “inappropriate” behaviour.
Videos on social media show people at the portal on North Earl Street flashing New Yorkers and showing them photos of the World Trade Centre on 9/11.
The Portal was relaunched with a ‘blurring’ option to censor inappropriate material and within a time limit of 11am to 9pm.