The oldest still-operating restaurant in New York City, still in the family of the original founders. At Christmastime, it's decorated to the nines. Go with a big group: portions are large and the wine flows liberally. Look for the little buttons on the walls: in the old days, the mafia would hang out in the back room, and if diners saw the cops come in, they'd press the buttons so the mafia guys could run out the back.
Adore is my favorite spot to carefully select a few beautiful flowers to take home or bring as a gift. I always try to pair my visit with a trip right around the corner, to Dashwood Books, for a great selection of art books.
This is a hot spot for plant enthusiasts. A recurring L.A. pop-up where the employees can tell you as much or as little as you want to know about cacti. Marco can tell you about the trees. Must visit, but only open April/May - September/October.