Part 1 in a series: Buenos Aries feels like a European city, but the only “palace” we toured was a 20th century office building inspired by “The Devine Comedy.” You won’t find grand cathedrals holding royal remains. Instead, look for the late political diva Eva Perón in a tiny rented crypt. Street protests, a legacy of 20th-century political upheaval, are a Plaza de Mayo staple. Beef? It’s what’s for dinner.