You find a clue on Ha'penny Bridge. It reads: "Cross the country to the edge of the world." You recall these soaring cliffs on Ireland's west coast.
Answer Cliffs of Moher
Stretching nine miles along Ireland's west coast, the spectacular Cliffs of Moher will take your breath away. O'Brien's Tower was built by local landlord Sir Cornelius O'Brien as an observation tower in 1835. Local legend tells that he actually built it to impress women, staging it on the highest point of the cliffs. That's a great effort; let's hope Sir Cornelius was successful.
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