Florida consistently proves to be the perfect post-work prospect for many a U.S. retiree, what with its offering of seemingly endless sunshine, tax breaks, and fine beaches. You could also look across The Pond to a specific corner of the land they call the Emerald Isle: Ireland. The nation's entire east coast, known as the Ancient East, is a treasure trove of castles, cottages, and historic sites that swirl around fabled cities like beer-sloshing Dublin and buzzy Cork. Okay, so it's not the balmy, subtropical Sunshine State, but this one offers up four distinct seasons, each of which has its own charm. More practically speaking, you'll likely jet into Dublin Airport (DUB), the largest in the country, which has stacks of transatlantic connections to the States and sits neatly on the country's east coast.