Here are all the results with descriptions
Bru na Boinne
The entrance to Bru na Boinne still exists, and you may just find passage back there. The gate is within the massive burial dome at Newgrange. It is home to Elcmar, the husband of Boand, the spirit of the River Boyne. Newgrange is a stopping place for gods, fairies, and spirits in their travels to and from the Otherworld and is a place where fruit trees were always producing and a cauldron was never empty.
Connla's Well
Located in Manannan mac Lir's fairy hall, this well (also known as Segais) is the source of all the wisdom that flows through magical rivers. It is surrounded by hazel trees that drop nuts of wisdom into its pool, where they are eaten by the Salmon of Wisdom.
Bothair Naofa
You are the magical road that connects Tara to Rathcroghan, on which the gods and other magical beings travel to and fro. The Hill of Tara is the capital of the Tuatha De Danann and where all High Irish Kings were crowned. Rathcroghan is the cauldron of the goddess Crochen and where she gave birth to her daughter, Queen Medb.
Tir na Nog
For every one year you spend in 'The Land of the Young,' a hundred years go by in the rest of the world. You get there on the back of a magic horse or by diving deep into the sea. It is inhabited by fairies, gods, spirits, and anyone who wants to laugh, play, eat, and drink forever. If you don't have a magic horse or a desire to risk drowning, you can find your way in at the standing stone at Lough Gur, County Limerick. There's a cave behind a hedge that leads you to Tir na Nog.
Eildon Hills
In the thirteenth century, Sir Thomas the Rhymer was abducted by the Queen of Elfland in the Eildon Hills and taken to her queendom. There she told him prophecies, which he brought back with him to our world. Some believe his prophecies came true. He was also never again able to tell a lie. He supposedly correctly foretold the death of Scotland's Alexander III.
Lough Erne
The site of one of the earliest recorded histories of Ireland (recorded by Ptolemy, no less), a world under this lake was said to be home of the king of the Fir Bolg--Irish people who had gone to Greece and come back. In one legend, the Celtic hero Conn-eda has to retrieve a magical dog, horse, and three golden apples from this underwater city.