Blarney is a village in County Cork.
You can go there on buses from Cork or take the Blarney sightseeing bus from the bus station in Cork. There are Taxi ranks located at tne train station, Airport and throughout the city.
By sightseeing tour from Dublin
Several Dublin based tour operators such as Kennedy & Carr Travel  offer daily tours from Dublin city to Blarney Castle, often including other areas of interest along the way such as Cork and Cobh- Titanic's last port of call. Typically tours depart around 08:30 in the morning. Tickets generally cost around €50. For many travellers such tours can provide the independence they want with the structure and local insight that makes for a relaxing tour. Such operators also offer private hire services upon request both from Dublin and from Cork.
Aside from the castle grounds, Blarney is a relatively small town and does not necessarily require any use of vehicles; in fact, it is highly recommended that all visitors walk rather than drive as the roads are already narrow and can be easily congested by incoming tourist buses/cars. Furthermore, walking would also allow visitors to visit the town's many shops hassle-free.
It is situated just on the periphery of Blarney village which is a few miles outside Cork City.Though it's believed a settlement was established here as early as the 10th Century, the castle was built around 1446 for the MacCarthy Chieftains of Munster. The MacCarthys had influence over Blarney and Munster throughout the many centuries of Anglo-Irish conflict until the defeat of the old Irish nobles by the forces of King William of Orange at the Battle of the Boyne in 1690. At this point, the Lord of Blarney was exiled and the castle was abandoned.
Outside of the castle walls, the surrounding gardens are particularly beautiful. The castle sits on 60 acres of parklands, including six different garden exhibits.
There are plenty of tourist shops in the village of Blarney, which sell souvenirs. For grocery shopping there is a local Super Valu. There is also a Post Office, which sells postcards and souvenirs as well as stamps!