National Gallery of Ireland
A standout collection of European masters, the National Gallery contains an exhaustive representation of fine art. It opened its doors to the public back in 1864, with a collection of just 112 pictures. Nowadays, there are some 15,000 pieces within its walls, with work on display from all the major European schools of art, alongside key Irish pieces. One watercolor, The Meeting on the Turret Stairs by Frederic William Burton, is only viewable for two hours each week, due to its sensitivity to light. Another must-see is the Yeats Collection, a broad assembly of pieces relating to Jack B. Yeats, as well as material from members of his family.