Officials cover their mouths from a dust cloud created by a tunnel boring machine cutting through a solid rock wall, Thursday, Sept. 22, 2011 in New York.

A construction worker, also known as a sandhog, climbs down from a hole created by a tunnel boring machine on Thursday, Sept. 22, 2011 in New York.

Students take part in an "antigravity" yoga class at the Om Factory in New York on Tuesday, Aug. 16. "Antigravity" yoga makes use of hammocks to help practitioners gain greater flexibility, allowing for a wider range of yoga poses, according to the workshop's website.

Students sit in hammocks as they take part in an "antigravity" yoga class at the Om Factory in New York on Tuesday.

Students sit in hammocks as they take part in an "antigravity" yoga class at the Om Factory in New York on Tuesday. "Antigravity" yoga makes use of hammocks to help practitioners gain greater flexibility, allowing for a wider range of yoga poses, according to the workshop's website.

A student takes part in an "antigravity" yoga class at the Om Factory in New York on Tuesday.

Bernice Acosta and other enthusiasts perform yoga in Times Square during an event marking the summer solstice on June 21, in New York City. Thousands of yogis will attend the free day-long event in Manhattan on the longest day of the year.

Enthusiasts perform yoga in Times Square during an event marking the summer solstice on Tuesday.

Yoga practitioners salute the sun while celebrating the solstice in Times Square on Tuesday.

People look through an outdoor ad frame while sitting on a bench in section 2 of the High Line in New York. The ribbon was cut Tuesday, June 7 on the long-awaited second section of the High Line, revealing a lush green lawn, prime lounging spots and a less-industrial feel than the original stretch of the famous park built on abandoned railroad tracks 30 feet above ground.

This 1934 shows a train on street level in New York. Freight traffic in the area began on street level in 1847, delivering dairy, meat and produce to factories and packing plants on the West Side near the Hudson River. The trains crashed so often with traffic — first carriages, then cars — that 10th Avenue was dubbed "Death Avenue." Signalmen on horses waving red flags dubbed West Side Cowboys weren't much help, so the tracks were elevated in 1934.

This 1953 photo shows "View on the Tracks," a view of the Empire State Building from the High Line in New York.

Visitors to section 1 of Manhattan's High Line stroll along the elevated railway converted to a city park that winds through the meatpacking District and West Chelsea neighborhoods, in New York, on June 3. The first segment opened in June 2009 and runs from Gansevoort Street to 20th Street.

Women run to find wedding dresses at the annual "Running of the Brides" sales event at Filene's Basement in New York on Friday, June 3. The annual sale is known for its long queues and frantic shopping among brides-to-be hoping to save hundreds or even thousands of dollars on designer wedding gowns.

A shopper tries on bridal dresses during the Filene's Basement "Running of the Brides" bridal dress sale in New York on Friday.

Women search for wedding dresses at the annual "Running of the Brides" sales event at Filene's Basement in New York on Friday.

A shopper carries bridal dresses during the Filene's Basement "Running of the Brides" bridal dress sale in New York on Friday.

A shopper tries on bridal dresses during the Filene's Basement "Running of the Brides" bridal dress sale in New York on Friday.

Avernell Joseph, of Brooklyn, New York, has a moment of indecision while trying on a wedding gown in the men's shoe department during the 'Running of the Brides' at a Filene's Basement store in New York on Friday.

Shannon Osborne carries a bridal dresses during the Filene's Basement "Running of the Brides" bridal dress sale in New York on Friday.

Women participate in a commemoration of the 100th anniversary of the Triangle Shirtwaist factory fire in New York, on Sunday, March 27, 2011.

Family members and attendees hold up shirts bearing the names of victims at a ceremony at the site of theTriangle Shirtwaist Factory fire March 25, 2011 in New York City.

(left) Firefighters work to douse the flames at the Triangle Shirtwaist Company in the Asch building at the corner of Greene Street and Washington Place, on March 25, 1911 in New York City. Workers were locked into the factory during their shifts, preventing escape. New Yorkers watched in horror from below as workers leapt to their deaths from the windows above. (Right) People walk past the Asch building the day before the 100th anniversary of the infamous Triangle Shirtwaist Factory fire which killed 146 immigrant workers, most of them young women, on March 24, 2011 in New York City. Public outcry over the tragedy led to nationwide debate on workers rights and safety regulations and helped pave the way for strong workers unions.

A model yawns as the group is given their instructions during a run through before the Luca Luca Fall/Winter 2011 collection during New York Fashion Week Feb.10.

A woman cleans lint from a dress before its display during the Tadashi Shoji Fall/Winter 2011 collection during New York Fashion Week Feb. 10.

A make-up guide rests on a desk backstage before a showing of the Tadashi Shoji Fall/Winter 2011 collection during New York Fashion Week Feb. 10

A model prepares backstage at the Marlon Gobel Fall 2011 fashion show during Mercedes-Benz Fashion Week at the Park Avenue Armory on Feb. 10.

Models wait backstage before the Rachel Comey Fall/Winter 2011 collection show during New York Fashion Week Feb. 10.