We've performed countless weddings at this iconic St. Augustine venue. We know the space, the staff, and exactly how to make your Treasury wedding unforgettable.
Treasury on the Plaza isn't just another venue on our list - it's one of our home venues. In 2026, we're proud to continue our partnership with this iconic St. Augustine landmark, a 7-time winner of The Knot's "Best of Weddings" and named one of the Top 10 Historic Wedding Venues in the Southeast. Located in the heart of historic downtown St. Augustine, this beautifully restored 1920s bank building offers a combination of old-world charm and modern elegance that few venues can match. The soaring ceilings, original vault doors, and stunning architecture create an atmosphere that deserves entertainment to match. That's where we come in. As a preferred vendor at Treasury, we've learned exactly how sound travels through the space, where to position speakers for optimal coverage, and how to work seamlessly with their exceptional coordination team. When you book COS Celebrations for your Treasury wedding, you're getting a team that knows this venue inside and out - from the 20-second vault door timing to the perfect EQ settings for speeches in that tall-ceiling room.
Here's a look at some of the weddings we've had the privilege of being part of at Treasury on the Plaza:
The vault comes alive
Custom monogram magic
Dancing under the projection
Grand entrance glow
Uplighting transforms the space
Sparkler send-off
Window light portrait
Why Treasury Couples Choose COS
We Know the Space
Treasury's unique architecture means sound behaves differently than most venues. We've dialed in the perfect setup for crystal-clear audio throughout the entire space.
Staff Relationships
We work hand-in-hand with Treasury's coordination team. That means smoother load-ins, better timeline execution, and one less thing for you to worry about.
Imagine your first dance with live saxophone echoing through those historic bank ceilings. It's a Treasury signature moment that guests talk about for years.
Lighting That Transforms
Treasury's architecture is stunning on its own - but with strategic uplighting and custom monograms, we help you make it uniquely yours.
"The dance portion of our wedding was truly epic. Corey surprised us with his sax and it was show stopping!"
- Liz, Treasury on the Plaza Wedding
Insider Tips for Your Treasury Wedding
After performing countless weddings at Treasury on the Plaza, here's what we've learned:
The Vault Entrance Is Everything
That massive vault door is the real deal - a genuine bank vault that takes about 20 seconds to open. We coordinate with the Treasury team to time your entrance perfectly to the music. Want a dramatic silhouette pull? We'll show the door operator exactly which lyric or beat to start on so your moment explodes exactly when it should.
The Room Flip Is Magic
During your cocktail hour in the Exchange Room, the Treasury team transforms the ballroom from ceremony to reception in under an hour. We recommend doing a private "room reveal" just the two of you before guests return - then watch their faces when those doors open. It never gets old.
Keep It Under Six Hours
This applies to any venue, but especially for a high-energy celebration: once you push past six hours, you need the right crowd to sustain the energy. The typical Treasury timeline (4 PM guests, 4:30 ceremony, 10 PM end) hits the sweet spot.
We Set Up for Ceremony Visibility
Our DJ booth sits next to the vault, hidden behind drapes during the ceremony. But we don't go in blind - we position a satellite speaker in the back of the ballroom so we can see everything and manage your ceremony seamlessly. Treasury provides the officiant mic; we handle everything else.
The Acoustics Need Experience
Those stunning tall ceilings create an echo-y room. We've dialed in the exact EQ settings for speeches (clear and intimate) versus dancing (full and energetic). It's one of those things you only learn from doing it many times.
Live Sax + The Vault = Unforgettable
Our DJ + live saxophone combo was made for this space. During open dancing, we peek around the pillar and hit the floor with your guests - the Gatsby vibe of Treasury plus live music creates something electric.
Our Treasury Wedding Services
Every Treasury wedding package can be customized to your vision. Here's what we offer:
What's Included
Professional DJ + MC
Premium sound system
Wireless microphones
COS Planning App access
Pre-wedding consultation
Venue coordination
Popular Add-Ons for Treasury
Live saxophone
Ceremony sound
Uplighting package
Custom monogram projection
Cold sparks
Dancing on clouds
Sample Treasury Wedding Timeline
Every wedding is unique, but here's a typical flow we've refined over many weddings at Treasury:
1:30 PM
COS Arrives for Setup
Load in through the side door by the Exchange Room. DJ booth positioned next to vault, hidden behind ceremony drapes.
4:00 PM
Guest Arrival
Guests seated in ballroom for ceremony. Soft prelude music playing.
4:30 PM
Ceremony
Ceremony in the ballroom. Treasury provides officiant mic; we handle processional, recessional, and all other audio.
5:00 PM
Cocktail Hour
Guests move to the Exchange Room for cocktails. Background music: jazz, acoustic covers, or your custom playlist. Meanwhile, Treasury's team executes the incredible room flip.
5:45 PM
Couple's Room Reveal
Private moment for just the two of you to see the transformed ballroom before guests return.
6:00 PM
Doors Open + Grand Entrance
Guests return to ballroom. We introduce the wedding party, build the energy, then all eyes on the vault for your entrance. Those doors take 20 seconds to open - we time it perfectly to your song.
6:10 PM
First Dance
Right into your first dance while the energy is high.
6:15 PM
Welcome & Blessing → Dinner
Brief welcome, then dinner service begins. Background music keeps the vibe warm.
7:15 PM
Toasts
Maid of honor, best man, and any other speakers. We adjust EQ for speech clarity in the tall-ceiling room.
7:45 PM
Cake Cutting + Parent Dances
Cake cutting, then parent dances if you're having them.
8:00 PM
Open Dancing
The floor is open! If you've added live saxophone, this is where it shines - we'll be out there with your guests, peeking around the pillars and keeping the energy electric.
9:45 PM
Last Dance + Send-Off
One final song with everyone on the floor, then your grand exit.
Pro tip: This timeline gives you about 5.5 hours of reception time - the sweet spot for Treasury. Going longer is possible, but this pacing keeps energy high from start to finish.
Treasury Wedding FAQs
Questions we hear from couples planning their Treasury on the Plaza wedding:
Can we do both ceremony and reception at Treasury?
Absolutely! The most common setup is ceremony in the ballroom, cocktail hour in the Exchange Room while they flip the ballroom, then reception back in the ballroom. The room transformation during cocktail hour is stunning - guests genuinely gasp when those doors reopen.
What about the Vault Bar - can we use it during our reception?
The actual vault where the Vault Bar is located is typically used as a bar during cocktail hour in the Exchange Room or as a specialty bar during the reception. It's a real bank vault with the original door, and it makes for incredible photo ops. Some couples love having a signature cocktail served from inside the vault - it's a fun nod to the building's history.
How many guests can Treasury accommodate?
Treasury on the Plaza accommodates 40-175 seated guests depending on your layout and package choice. The Custom Package offers the most flexibility for smaller weddings, while the Eat Drink & Be Married and All-Inclusive packages are designed for 100-175 guests. The Exchange Room is perfect for cocktail hour while the Treasury team transforms the ballroom. We've done weddings across the full range - intimate 50-person celebrations and packed 175-guest parties - and the space adapts beautifully to any size.
Do you provide ceremony sound for outdoor rooftop ceremonies?
Yes! Rooftop ceremonies require a slightly different setup than indoor - we bring wireless mics for the officiant and couple, plus speakers that can handle outdoor acoustics and potential wind. We've done it dozens of times and know exactly what gear works best up there. Just note that rooftop ceremonies are weather-dependent, so always have the indoor ballroom as your backup plan.
What's the best add-on for a Treasury wedding?
Hands down, live saxophone. The acoustics in that ballroom were made for it - the tall ceilings and hard surfaces create this beautiful reverb that makes the sax sound absolutely incredible. During your first dance or open dancing, it transforms the energy from "great party" to "unforgettable experience." Uplighting is a close second - the architecture is stunning on its own, but strategic lighting makes it yours.
When should we book our Treasury wedding DJ?
As soon as you've locked in your venue. Treasury is one of St. Augustine's most popular venues, and peak season dates (October-May) book fast - both for the venue and for us. We typically see couples booking 12-18 months out for Saturday weddings. That said, we've pulled off amazing celebrations with just a few months' notice. Check your date's availability here.
About Treasury on the Plaza
Venue Information
Location: 24 Cathedral Place, Suite 111, St. Augustine, FL 32084 (downtown, steps from the Plaza)
Capacity: 40-175 seated guests depending on layout and package
Style: Historic 1920s bank building with original vault doors, 30-foot ceilings, terrazzo floors, and Art Deco details
Spaces: Main Ballroom (ceremony + reception) | Exchange Room (cocktail hour) | Vault Bar | Bridal Suite | Groom's Area
Built: 1927 as the Florida National Bank building, restored and reopened as a premier event venue
Recognition: 7-time winner of The Knot "Best of Weddings" | Featured in "Top 10 Historic Wedding Venues in the Southeast" | 500+ five-star reviews
What Makes It Special: The original bank vault (yes, a real vault that takes 20 seconds to open), soaring architectural details, prime downtown location, and the incredible room flip during cocktail hour
Bring your own vendors (like us!) and customize every detail. Available 7 days a week for 40-175 guests.
Eat, Drink & Be Married
Venue + catering + open bar + coordination included. You handle entertainment (that's where we come in). 100-175 guests.
All-Inclusive
Most vendors included in one package. Available any day in 2026. 100-175 guests. Ask about adding COS as your entertainment upgrade.
No matter which package you choose, COS Celebrations can provide your entertainment. Contact Treasury directly for venue booking, then reach out to us for your DJ quote.
Treasury on the Plaza has been one of St. Augustine's most coveted wedding venues for good reason. Originally built in 1927 as the Florida National Bank, this stunning building retains all the grandeur of the Jazz Age - soaring 30-foot ceilings with intricate plasterwork, restored terrazzo floors that gleam under the chandeliers, and that show-stopping bank vault with its massive circular door. The venue offers multiple spaces: the grand ballroom for your ceremony and reception, the intimate Exchange Room perfect for cocktail hour, and a charming courtyard. The location can't be beat - you're steps from the historic Plaza de la Constitución, surrounded by St. Augustine's cobblestone streets and Spanish colonial architecture. It's the kind of venue that photographs beautifully from every angle and feels magical in person - exactly the setting that deserves world-class entertainment to match.
Other St. Augustine Venues We Serve
Love St. Augustine but exploring other venue options? We're preferred or experienced at these nearby venues:
