The New York Law School threw itself a party last month to celebrate the completion of its just completed glass-encased $200 million building, now a glistening feature of the eastern Tribeca landscape.

As students and alumni toured the sunny public spaces, hi-tech classrooms and (as yet) empty Mendik Library, they were treated to copious quantities of food and a variety of live music on each floor. But many chose to lounge on the fifth-floor terrace outside the cafeteria, with its panoramic view of Tribeca and points north.

The 235,000-square-foot building, at West Broadway and Leonard Street, stands five floors above ground and four below, doubling the size of the school’s campus. The new Mendik library, with 29,000 linear feet of bookshelves, starts on the first floor and reaches four stories down.

Classrooms occupy the building’s interior, isolated from street noise, while all public space—what you see from the street, looking in—is on the outer area of the floors. Special “vibration isolators” are built into the classroom floors to buffer subway rumblings.

To help pay for the building, the school sold its Mendik Library property at Church and Leonard Streets, along with unused air rights, to Izak Senbahar and Simon Elias of the Alexico Management Group for $136.5 million.

The sale angered neighbors when they learned that the developer plans a 60-story building on that site, exempted years ago when the area was rezoned to prevent high-rise construction. Financing problems have stymied the developer and the site remains a hole in the ground.

But the school’s new building is ready to go, opening for its first students this summer. And those who would be attending classes there were pleased by what they saw.

“It’s very student-friendly,” observed 29-year-old Suzanne Walsh, class of 2011, who said she will probably now study more at school.

Maryam Maleki, who graduates next month, had another reaction as she surveyed the swanky facilities.

“This is completely unfair!” she said.