La Grenouille
From its famously over-the-top florals to its fine French cuisine, there are quite a few reasons why La Grenouille has been a high society staple for literal decades. It's an opulent, precious relic of Old School New York in the best way possible. If you really want to do it up, see the tree first then linger here late to catch a live jazz performance by owner Philippe Masson accompanied by his band.
La Grenouille, 3 E 52nd St.
[Photo via @lajollawinegirl]