Many of the 35 million Americans of Irish descent are here due to the worst famine to hit Europe in the 19th century, the Irish potato famine.
It drove more than a million people to flee mass starvation, many climbing aboard ships they hoped would ferry them to a better life in the New World. But the fate they would meet on what came to be known as "coffin ships" was often as grim or worse than the fate they were leaving behind; 100,000 passengers didn't survive the journey.
Toyo Ito, a 71-year-old architect based in Japan, is the winner of the 2013 Pritzker Architecture Prize. The jury honored Ito for his more than four-decade career, in which he has created architecture that "projects an air of optimism, lightness and joy ... infused with both a sense of uniqueness and universality."