National Union Building
About the Space
Private event venue in Washington, DC | National Union Building The National Union Building is a historic private event venue in Washington, DC that combines timeless architecture with modern flexibility in the heart of downtown. Originally constructed in the late 19th century, this iconic landmark has been thoughtfully restored to host contemporary events while preserving its original character. From its grand façade to its light-filled interiors, the venue offers a refined yet versatile setting for everything from elegant private dining experiences to large-scale celebrations. Inside, the space features soaring ceilings, expansive windows, and beautifully preserved architectural details that create a sense of openness and sophistication. The venue is known for its dramatic event spaces, including multi-level rooms and a stunning rooftop terrace that offers sweeping views of the city. Whether hosting a formal seated dinner or a lively reception, the National Union Building delivers a polished atmosphere that feels both historic and elevated. The National Union Building operates as a full-scale event space with multiple rooms and configurations designed to accommodate a wide range of group sizes. The venue can host intimate private dining gatherings as well as large events with several hundred guests, making it ideal for weddings, corporate functions, and large social celebrations. Its rooftop terrace is a standout feature, offering an open-air setting perfect for cocktail hours and evening events. The space supports both seated dinners and standing receptions, with room for staging, entertainment, and audiovisual setups. Catering is typically customizable through preferred vendors, allowing hosts to tailor menus and service styles to their event. With its central downtown location, the venue is easily accessible and surrounded by hotels, offices, and major DC landmarks, making it especially convenient for out-of-town guests and corporate attendees. For those seeking a private event venue in Washington, DC with both historic charm and modern versatility, the National Union Building stands out as a premier choice. Its architectural character, expansive layout, and rooftop experience create a setting that feels memorable and elevated from the moment guests arrive. As an event space near downtown DC, it offers unmatched flexibility for planners looking to host anything from a refined private dining event to a large-scale celebration. The combination of location, ambiance, and adaptable space makes it particularly appealing for weddings, corporate gatherings, and milestone events that require both style and substance. The National Union Building is ideal for wedding receptions, rehearsal dinners, corporate events, galas, conferences, holiday parties, networking receptions, brand activations, birthday celebrations, and upscale private dining experiences. Book your next private dining or event experience at the National Union Building today.
See moreUp to 750 guests
$100-$200/person
Ways to book this venue
Type of Event Space
Athmosphere & Cuisine
Rentable Spaces
Sixth Floor South
Up to 200 guests
Reception: 200 guests | Rounds: 150 guests | Theater: 180 guests | 1,266 sq ft A spacious and flexible top-floor venue featuring historic charm, dual projectors, and elegant wood flooring. Two ceiling-mounted projectors and window alcoves Light-filled and perfect for both daytime and evening events Ideal for receptions, business forums, and celebratory dinners Can be combined with 6th Floor North
Fourth Floor North
Up to 150 guests
A view of the neighborhood roofline dominates the view at the front of this space. Original light fixtures in the window nooks and tin ceilings make for a fantastic space for parties. Equally useful for business presentations, this room features two ceiling-hung projectors and screens. 150 GUESTS CONFERENCE OR COCKTAILS 120 SEATED IN ROUNDS 100 CLASSROOM 66 HOLLOW SQUARE
Sixth Floor North
Up to 150 guests
A stunning vaulted ceiling at the front of this large space provides guests with the experience of being in the roof of National Union Building. It contains some of the original timber used to hold up the spire & the hand-chiseled brownstone from Pennsylvania that make up the façade. Light wood floors and the height of the space provide lovely light during the day and elegance at night. 150 GUESTS CONFERENCE OR COCKTAILS 120 SEATED IN ROUNDS 100 CLASSROOM
Second Floor South
Up to 120 guests
This space is excellent for business meetings or a social occasion. It has a projector and a screen as well as silver tin ceilings, original brick walls, and intimate lighting. 120 CONFERENCE OR COCKTAILS 80 SEATED IN ROUNDS 50 CLASSROOM
Fourth Floor South
Up to 100 guests
This space is fully functional for business meetings with one ceiling projector and screen, a butler’s pantry for easy service for your event and window nooks for more intimate seating areas for breakout conversations. 100 GUESTS CONFERENCE OR COCKTAILS 70 SEATED IN ROUNDS 50 CLASSROOM
First Floor North
Up to 50 guests
Intimate space with historic molded ceiling, subdued lighting, brick walls and a cozy feeling perfect for a cocktail party or other reception style event. A perfect add on to the lounge above in second north for a two-level intimate event.
Second Floor North
Up to 50 guests
With Arched Windows in the front of the room, tin ceilings and a carved mantle, this room is both expansive and intimate. There is easy access to restrooms on the way to the central elevator and can be combined with 2nd Floor SOUTH on the same floor for a more expansive event or 1st Floor NORTH for a two-level intimate event.
Speakeasy (Cellar)
Up to 50 guests
Seated: 25 guests | Standing: 50 guests | 585 sq ft Tucked beneath the building, this speakeasy-style gem features a black granite bar, brick archways, and a spiral staircase for added drama. Historic speakeasy ambiance with custom bar Brick archways and moody lighting Ideal for after-parties, tastings, or private celebrations Can be combined with 1st Floor North for up to 90 guests
Third Floor North (Demo Kitchen)
Up to 50 guests
The perfect space for a variety of classes, particularly cooking classes. You can arrange for one of our talented Cooking Instructors to provide a class for family & friends, or as a Team Building event for your workplace. Beverage pairing packages are available for any class.
Fifth Floor North
Up to 25 guests
Conference room overlooking Penn Quarter with three smaller rooms for breakout sessions for intimate and productive meetings.
Amenities & Features
Show all 25
Perfect For
Food & Beverage Policy
Outside food & beverage allowed with restrictions
Pricing
Detailed pricing is available on request
Send an inquiry and the venue will share pricing details for your event.
Reviews · 4.9 (45)
Leave a ReviewThe team (led by Steven) that handled my retirement party at NUB were friendly, energetic, and very helpful. They provided "to go" containers for the leftover catering which were greatly appreciated. An excellent venue for such a celebration!
This event space is terrific. Multiple room options. Great location and fun old time vibe with tin ceilings, old fashioned elevator, wood floors, etc. But the very best thing about doing an event here is the staff!! I have rarely experienced this level of friendly, kind, and can-do service. Brian was our point person and he responded quickly, helpfully, and generously. Greg is my new BFF and is just the nicest most accommodating person. Talked me down off and leastvtwo cliffs. Jasmine, Anissa, the whole bar staff were wonderful. Sean was incredibly helpful and even spent several minutes trying to help me problem solve when we had a slight issue with the banners we were hanging. Cobra was just right on security. Tools and supplies were always readily shared with us. No one was impatient with me when I kept asking for furniture to be moved and every other request. It is impossible for me to recommend this staff more highly.
See moreAs someone who coordinates testing for a public charter school right around the corner, I have never worked with people so accommodating! Despite this not being a typical event that they host, the staff has been SO wonderful. They are understanding, helpful, and tolerant of 250 high school students arriving at 7 AM! No small feat. I so appreciate them and definitely recommend their venue space no matter what event you're looking to host!
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Location
918 F St NW, Washington, DC 20004, USA
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