It’s one of the biggest real estate projects in the country in recent years, and one of the biggest in New York since Rockefeller Center was completed 80 years ago.

And taxpayers helped pay for this new $25 billion neighborhood.

Hudson Yards officially opened on Friday. Want to visit? Here’s everything you’ll need to know:

Where is it?

Hudson Yards was built above the Metropolitan Transportation Authority rail yards on the West Side of Manhattan.

What buildings are there?

There’s a shopping mall between two office towers, 10 and 30 Hudson Yards. 50 Hudson Yards is to the north and under construction. Another office building is at 55 Hudson Yards.

Then there’s 35 Hudson Yards, which is 1,000 feet high and includes shops, offices, a hotel and apartments. And over at 15 Hudson Yards, a residential building, there are separate entrances for the wealthy condo owners and the subsidized renters.

The most eye-catching buildings are the Shed, a $500 million city-sponsored arts center, and the Vessel, a 150-foot-high, $200 million structure with 2,500 climbable steps.