NEW YORK — Century 21, one of the city’s most popular retail destinations, plans to reopen its flagship in lower Manhattan around Feb. 15, according to co-owner I.G. Gindi. The 120,000-square-foot discount department store, located at 22 Cortlandt Street on the edge of Ground Zero, has been closed since the terrorist attacks of Sept. 11. “We have been working hard with the contractors to get the store ready for a mid-February opening,” Gindi said. “We had to install new fixturing and get completely new merchandise.”

The store suffered no serious structural damage, but dust and debris ruined much of the interior, and the company had to discard more than $10 million in merchandise. At first, the store will most likely operate about 80 percent of its overall selling space, said Gindi. All of the spring and summer apparel will be new.

The company’s flagship, which opened about 40 years ago, sells off-price designer and other merchandise, including intimate apparel, shoes, accessories, cosmetics, housewares and luggage.

Century 21 also has two other off-price stores, in the Bay Ridge section of Brooklyn and Westbury, N.Y., and an outlet in Secaucus, N.J. A new store is planned to open this spring in Morristown, N.J.

After the attacks, Century 21’s buying and corporate offices moved to Secaucus, but now everything has relocated back to the main New York location, Gindi said.