Antiques can be found on Via dei Coronari, while the area around the Trevi fountain is shoe country. It's no secret that Romans love to eat, and the peripatetic snacker will find temptations all along the streets. Corner vendors sell slices of coconut and watermelon. Bars and cafes pile counters high with delicate crustless sandwiches called tramezzini, which are sold by halves. Dining as Romans do means you won't get butter with bread.
Romans prefer to sprinkle salt on the crust.
Vegetables and salads are considered separate dishes and follow the order of the main course. Unless fried, expect vegetables to be served cold. Romans are dedicated to fashion and dress with care, even downright elegance, if only to sit in a nearby piazza. Don't be surprised or discomfited by the interest Roman men take in the appearance of female visitors. Not only does each one close on a different day, but the day keeps changing as well.