Dublin's main street, known as O'Connell Street (Sráid Uí Chonaill in Irish), is an iconic boulevard that is part of a grand avenue created in the 18th century, which runs through the center of the Irish capital. With a length of 500 meters and a width that varies from 49 meters in the south to 46 meters in the north, it is one of the widest streets in Europe. In its beginnings, during the 17th century, it was a narrow street called 'Drogheda Street', in honor of Henry Moore, Earl of Drogheda. However, it was remodeled in the late eighteenth century and renamed 'Sackville Street', in honor of the first Duke of Dorset, Lionel Sackville. Finally, in 1924, the street adopted its present name in honor of the nationalist leader Daniel O'Connell.

O'Connell Street has witnessed numerous historic events and has undergone several transformations over the years. From reconstruction after damage caused by the Wars of Independence and the Civil War to its recent revitalization through the Dublin City Council's Integrated Area Plan (IAP) in 1998.

This iconic boulevard is home to an impressive array of neoclassical buildings and monuments, including the 1818 General Post Office (GPO) and the Spire of Dublin, a monumental stainless steel spire opened in 2003. It is also flanked by a series of commemorative statues, including Daniel O'Connell and Charles Stewart Parnell, reflecting the street's historical significance.

Over the years, the street has been the scene of key events in Irish history, from the Easter Rising of 1916 to the Irish Civil War of 1922. It is also the center of annual celebrations, such as the St. Patrick's Day Parade, and is home to important institutions such as St. Mary's Procathedral and Rotunda Hospital.

Despite urban planning challenges and controversies, O'Connell Street remains a focal point of Dublin life, with its rich historical heritage and its central role in the political and cultural life of Ireland.