This Feb. 17, 2013 photo shows a couple hiking uphill on the Bray-to-Greystones cliff walk south of Dublin, Ireland. The town of Greystones is in the background. The 8-kilometer (5-mile) path closely parallels Dublin's commuter train line along the coast, and hikers can catch the train back to Dublin from either Bray or Greystones. (AP Photo/Shawn Pogatchnik) ORG XMIT: NYET776

This Feb. 12, 2013 photo shows children running toward the entrance of the Natural History Museum of Ireland in Dublin. The museum, with its playful hedge animals, displays the flora and fauna of Ireland. It is one of several Dublin museums offering free admission year-round. (AP Photo/Shawn Pogatchnik) ORG XMIT: NYET769

This Feb. 12, 2013 photo shows visitors to the National Gallery of Ireland inspecting some of the sketchbooks compiled by the artist Jack Yeats in Dublin. Paintings by Jack Yeats, brother to Ireland's Nobel-winning poet W.B Yeats, form the centerpiece of Ireland's national art collection on view for free at the art gallery on Dublin's Merrion Square. (AP Photo/Shawn Pogatchnik) ORG XMIT: NYET772

This March 23, 2012 photo shows Dublin resident Catherine Heaney, 45, sitting near a field of blooming heather and a statue of Socrates in the National Botanic Gardens in Dublin, Ireland. The gardens, founded in 1795, are home to more than 300 endangered plant species. (AP Photo/Shawn Pogatchnik) ORG XMIT: NYET775