NYC

Museum of Mathematics, an institution dedicated to the science of numbers and patterns, opened December 15. The 19,000-square-foot venue occupies two levels of a building at the north end of Madison Square Park and offers permanent exhibit space as well as classroom space available for private events.

Across from Penn Station, the Skylight Group operates Skylight at Moynihan Station, a suite of event spaces inside the century-old James A. Farley Post Office Building designed by McKim, Mead & White. Available are the mail sorting room, a 41,000-square-foot space with a black tiled floor and domed ceiling, and the 33,000-square-foot postal dock, an industrial steel and glass atrium with two drive-in access points.

Affinia Manhattan wraps up a renovation to its conference center this month, part of a $15 million hotel renovation that started in November 2010. The meetings space will have its own entrance and elevator. The final touch, a new hotel lobby, should be ready in March. The hotel's nine meeting rooms include the 12-person Rockefeller boardroom to the 325-person Fitzgerald ballroom.

A new upscale sports bar inside the Gansevoort Park Avenue, the Windsor opened December 13. The space can accommodate 74 and is available for private events, including seated parties served à la carte and large events with an open bar and passed food.

Highgate Hotels is expected to open its latest property, the Quin, in March 2013. The site, the renamed and redesigned Buckingham Hotel, offers 200 rooms, including suites dedicated to artist Georgia O'Keeffe and pianist Ignacy Jan Paderewski. Also on site are a permanent art gallery, a spa partnership with LVMH-owned Fresh, and an in-house restaurant.

Harding's, a restaurant serving American comfort food, opened at the Flatiron district in November. Available for buyouts, the restaurant can receive as many as 200 guests. Other spaces available for private events are the den and mezzanine, each accommodating 16 guests, while the dining room and cocktail lounge have a capacity of 80.

Located in the Chelsea arts district, 545 is a column-free 5,000-square-foot independent event venue. The raw space is available for single-day or multi-week rentals and can house a variety of events from pop-up shops to product launches.

Gemini Real Estate Advisors recently opened the Jade Hotel, a 113-room property in Union Square. With interiors designed by Andres Escobar, the hotel has ebony wood and marble accents as well as an in-house restaurant from Frederick Lesort called Grapevine.

Opening in March, TKP New York offers 32,000 square feet of meeting space in 12 rooms. The largest space, the 4,872-square-foot Empire ballroom, holds 334 theater-style of 224 for banquets. A series of smaller rooms include the Manhattan room hosting 150 for reception and the East Village room seating 80 for banquets.

Toshi's Living Room and Penthouse is a bilevel event space. The 4,000-square-foot Living Room can host 600 for a cocktail reception, while the 3,700-square-foot Penthouse accommodates 400. During cold months, the roof terrace can be tented and heated.

Perhaps the largest project scheduled to debut this fall is the Barclays Center, an 18,000-seat sports arena and home for the N.B.A.'s Brooklyn Nets. Within the 675,000 square feet of space (slated to officially open in September) are a location of hip-hop mogul Jay-Z's 40/40 Club, an 11-suite section known as the Vault, and the 6,000-seat Cushman & Wakefield Theater.

Humphrey, a new American-inspired farm-to-table restaurant inside the Eventi hotel, offers private areas for corporate meetings and events. The space has a retractable glass roof for year-round access, and outdoor seating for as many as 100 guests. Available for buyouts, the venue accommodates parties ranging from 20 to 200 people.

Sentry Centers' newest conference center, 810 Seventh Avenue, offers 11 private studios to accommodate as many as 300 guests for a variety of functions. Conveniently located in Midtown, the venue offers 12,000 square feet of meeting space. On-site catering is available.

Located in Midtown Manhattan, new private meeting and event space Offsite is slated to open this month. The 4,200-square-foot venue boasts modern decor with streamlined furnishings and a mostly neutral color palette accented with bright pops of neon. The three-story space offers five large LED screens, a digital smart board, floor-to-ceiling whiteboard walls, live-camera-feed capabilities, and live-music input integration. The main floor seats 60 or holds as many as 150. An executive conference room seats 30, and the lower level has room for 25.

W New York recently renovated its eight meeting and event spaces along with the hotel's 3,690-square-foot Great Room. The 1,933 square feet of meeting space offers adaptable conference equipment, including built-in screens in every room and integrated audio systems with speakers. The space boasts minimalistic decor, with contemporary furnishings and a neutral color palette.

Metropolitan Pavilion recently expanded its Chelsea domain with two new rooms, the showroom (pictured) and conference room. The venue now offers five event spaces fit for larger meetings, conferences, or workshops, and two smaller meeting rooms. The 850-square-foot showroom holds 30 people and has a smaller interior room, called the Executive room, which can be used for administrative space, storage, prep, or other needs. The conference room, has a contemporary feel with streamlined furnishing; it seats 10 people.

Located inside the Alexandria Center for Life Science, Apella offers built-in amenities such as desks embedded with power connections, open communal kitchen areas, and an array of high-tech options. The space holds as many as 300 guests for receptions, or 150 seated classroom-style. On-site catering by Tom Colicchio's Riverpark and 'Wichcraft is available.

P.D.R., a private dining room inside Cafeteria restaurant in Chelsea, is available for buyout for as many as 24 people. The space boasts a streamlined, modern look, marked by a palette of mostly white, dark wood furnishings, and wall-to-wall stainless steel shelving. Helmed by Cafeteria Group, the venue offers audiovisual capabilities, private restrooms, and access to a lower lounge area.

Following a $150 million renovation, the Sheraton New York Hotel & Towers now boasts a Cisco Telepresence Suite, which features ultra high definition video and audio relay; it holds six people. Among the hotel's 60,000 square feet of event space, are 43 meeting rooms and a separate, more upscale, executive conference fit for corporate events. Designed to match the hotel's classic decor, the meetings facilities are outfitted with dark wood and brown leather furnishings.

Renovations to the Ritz-Carlton Battery Park include updates to its 12,000 square feet of conference and event space. The hotel offers 12 function rooms including the Liberty Room, which holds 45, and the Heritage Room (pictured), which holds 60.

Chef's Pass, a private dining space inside Bouley, can be customized with guests' own music, pictures, and videos. The chef's table, which is headed by chef David Bouley, seats 11 people. Guests can share conversation with chefs, winemakers, or food artisans through Skype on a large flat-screen TV while having their meal.