Fifty years since reunification, the fall of Saigon is a distant memory and microbreweries, cool cafes and Michelin-lauded restaurants are adding another dimension to the city’s eclectic food scene.

Billionaire Warren Buffett famously lives quite humbly for one of the richest men in the world. His incoming replacement, Greg Abel, is also not the flashiest spender—though, living in Des Moines, ...