It may not be easy to get into Gramercy Park, but for one single hour on Christmas Eve, the exclusive green space will be open to all—no key required. As it’s done in years past, the Gramercy Park Block Association will host an hour of caroling within the park, allowing the any and everyone access to what’s normally one of the city’s most exclusive enclaves.

The caroling event, an annual park tradition, will be held on December 24, from 6 p.m. to 7 p.m., and will be led by the park’s trustees Arlene Harrison and Rev. Thomas Pike.

And that’s all well and good, but it’s also the one chance most New Yorkers get each year to enter the ritzy, normally off-limits space. There are only 400 keys that grant entry to the park, so unless you’re one of the lucky few—or know someone who is—you’re pretty much screwed. Except on Christmas Eve, apparently.