Post-Kunz, the midtown lounge and private dining space briefly known as Grayz is reborn this Thursday night as Atria, the new name an allusion to the townhouse’s distinctive eight-story atrium. That grand space, now hung with sculptures by Brooklyn-based artist Shaun Acton, has reverted to its original, Aquavit-era purpose as the main dining room, while the ground floor has been designated the bar and lounge. Very little else has changed, though: The kitchen remains in the hands of Kunz understudy Martin Brock, whose full menu debuts February 2. Until then, he’s offering limited prix fixe menus priced to match Restaurant Week (lunch, $24.07; dinner, $35) and featuring globally inflected dishes like date-glazed baby back ribs with hominy grits, Aleppo popcorn, and tamarind reduction.

Atria. 13-15 W. 54th St., nr. Fifth Ave.; 212-262-4600