It's been a long, long dire winter and the city's tourism wing wants visitors and New Yorkers alike to take in some fresh air at the Big Apple's hot spots.

NYC & Company Tuesday will unveil its "Hello Summer" campaign online and in advertisements to highlight some of the best attractions in the five boroughs.

More than 15 million people are expected to come to New York between June and August. Fred Dixon, NYC & Company's CEO, said he wants those tourists to enjoy some of New York's gems.

"It was a great opportunity because of all of the activity going on," he said.

Dixon said one of the campaign's top focus points are the new tourist spots, such as the Whitney Museum's new Meatpacking District location, the Ellis Island National Museum of Immigration, which opens May 20, and World Trade Center Observatory, which will open on May 29.

The campaign will target summer travelers in Boston and other cities around the world, pointing them people to an online guide that offers free deals..

The Bronx Museum of the Arts, Socrates Sculpture Park in Queens, and Snug Harbor Cultural Center & Botanical Garden in Staten Island, all offer free events throughout the summer, according to Dixon.

NYC & Company will continue to highlight unsung neighborhoods as part of its NYCGO Insider Guide initiative this summer starting with the Flatiron District. The promotion is aimed at returning visitors who want to check out other parts of New York.

"We encourage them to take advantage of these gems as well," he said.