This Sunday, September 29th is National Coffee Day. New York City has no shortage of coffee shops and we’ve discovered many of them (it’s not very hard work!) — from coziest, to coffee shops that are combined with other businesses, most design-oriented. Today, we are sharing our favorite hidden coffee shops. Among these are range of hidden coffee shops with really represent a wide range of possible experiences in  New York City, from under historic churches, in a subway station, and on top of a notable auction house.

We applied a strict criteria for these secret spots: 1. The location must primarily function as a coffee shop 2. There must be a dedicated portion of the floor for making and serving coffee and/or food, as well as having seating for guests 3. It cannot be seen from the street. 4. It cannot have a permanent sign on the street denoting its existence. As such, we deliberately did not include places that have a coffee bar inside a retail shop, for example, or a cafe inside a museum.

1. Voyager Espresso

Underneath 110 William Street in Lower Manhattan, an underground hallway that leads to one of the more underutilized entrances to Fulton Street station is home to Voyager Espresso, a tiny coffee shop that in-the-know New Yorkers love. It is definitely hard to find  — you can find it from the particular John Street exit of the subway or by going through a door in the lobby of the building and heading down.

The coffee shop roasts its own beans, serves drinks in flasks and bottles, and has a pretty extensive menu of tasty sandwiches (soft boiled egg tomato arugula toast, peanut butter honey arugula toast, and avocado toast), breakfast foods, even a ginseng chicken soup.