Taking a good look at this town often costs a pretty penny. City observation decks generally charge for entry, and many of the best publicly accessible rooftops are exclusively intended for customers of the bars and restaurants perched there. So where’s a New Yorker to go for some higher-floor fresh air and a view without a budget?

Below, five of the boroughs’ best public rooftops that won’t cost you a penny (a qualification that eliminates the Metropolitan Museum of Art’s recently reopened rooftop garden, which costs a minimum of 1 cent to New Yorkers and tristate area students).

Elevated Acre

This 1-acre public-private plaza is an impressively transportive oasis of well-landscaped solitude amid the bustle of Wall Street. There’s some bench seating and plenty of grass, sweeping views of the East River and a nice combination of corporate-feeling flora and lush fauna. The entry stairs and escalators can be hard to find but are worth the search. Though the physical space has existed for decades, it didn't become such a sanctuary until a 2005 revamp. 55 Water St., Financial District

The Stavros Niarchos Foundation Library

The top floor of this freshly renovated Midtown New York Public Library branch – and the system’s largest circulating branch — features a wraparound rooftop terrace with not just views but also seating. Open during regular library hours. 455 Fifth Ave., Midtown

Pier 57

This nearly 2-acre rooftop park offers sweeping views of the Hudson and Lower Manhattan, stunning sunsets, and bleacher-style tiered seating to rest your weary legs. It’s located across from the far more lush Little Island. To access it, walk to the gate by City Winery, follow the pathway inside, and take the stairs (or elevator) all the way up. Open daily from 6 a.m. to 1 a.m. 25 11th Ave., Chelsea

Kingsland Wildflowers Green Roof and Community Engagement Center

At the edge of Greenpoint sits this 25,000-square-foot native pollinator garden. Its roof is more than a refuge: It’s a truly one-of-a-kind eco rooftop which, when paired with its strangely industrial vantage point of Brooklyn, is almost surreal. To access it, one must first trek to the borough’s edge and then climb a memorable red-painted exterior staircase (there’s also an elevator). Open during public events and by appointment weekdays 10 a.m. to 5 p.m. 520 Kingsland Ave., Greenpoint

The New York Historical

New York City’s oldest museum also has its newest publicly accessible roof terrace. The new outdoor portion of the museum has views of Central Park West, the Upper West Side and, for those with good vision, what lies south of it. The roof opened alongside the Tang Wing for American Democracy this spring. Admission to the museum, which includes terrace access, is pay-as-you-wish from 5 to 8 p.m. on Thursdays, Fridays and Saturdays. 170 Central Park West, Upper West Side