Versatile Event Venues


Achieve peak event success with our 21 versatile venues and thoughtful event services. Our dynamic event venues range in size from boardrooms and breakout rooms to the California Ballroom’s nearly 9,100 sq ft. Unique, outdoor settings offer an inspiring backdrop for meetings and events in San Diego’s year-round comfortable climate. Together with our creative culinary offerings, on-site audiovisual capabilities, and thoughtful event services, we aim to help you achieve peak productivity and exceed your event goals.

Garden Terrace

3D Virtual Tours & Floor Plans

Envision your event at The Westin San Diego Gaslamp Quarter with a virtual walk-through of our dynamic event space, premium suites and signature hotel features. Discover your ideal meeting and event destination in Downtown San Diego with our 360 photos and 3D Virtual Tour.

The Westin San Diego Gaslamp Quarter


Event Rooms

39386 SQ FT

Total Event Space


Capacity Largest Space

Start Planning Your Meetings or Events Here

Tell us about your event, then we'll contact you and plan it together

Double Points Promotion
Take your next meeting a step beyond — and be rewarded. For qualified events or group bookings contracted by June 30, 2024, and hosted by December 31, 2025, we’re offering double Marriott Bonvoy® points. Terms and conditions apply. Contact us to learn more!
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Garden Terrace

Meetings & Events

Choose from more than 20 flexible meeting venues and outdoor event spaces in downtown San Diego

Our hotel offers 39,000 square feet of downtown San Diego event space with room for up to 950 guests Learn More
Host a cocktail party or casual meeting on our rooftop terrace venue with downtown San Diego views Learn More
Natural light lends a unique look and open atmosphere to Harbor Room and Pacifica Boardroom venue Learn More
Energize meeting guests in downtown San Diego with dynamic coffee breaks, luncheons and dinners Learn More
Let our on-site meeting planners arrange all the details of your event near San Diego Courthouse Learn More

Ballrooms and Breakout Space

All 20 venues are strategically stacked across four floors to allow for quick and easy access between the two ballrooms and variety of breakout space.

9,064 Sq Ft

California Ballroom

Capture your audience's attention in the expansive California Ballroom, complete with a bright and open foyer overlooking the floor to ceiling windows in the lobby. The California Ballroom anchors the second-floor meeting space with multiple options for breakout rooms and meal functions nearby. Flexible set-up options in the California Ballroom include dividing the space into 3 sections.

California Ballroom

5,940 sq ft

San Diego Ballroom

Create an invigorating event setting in the 4th Floor San Diego Ballroom, featuring modern accents and extensive lighting and rigging capabilities. Located next to the Garden Terrace, the San Diego Ballroom also offers the desirable option for a seamless indoor/outdoor event flow to enjoy San Diego's year-round comfortable climate. 

San Diego Ballroom Meeting

256 sq ft - 1,740 sq ft 

Meeting Rooms

Host a breakout session or small meeting in one of our more intimate event rooms that range in size and offer flexible set-up arrangements. Energize your event with abundant natural light from windows in many of the rooms. War Rooms are also available. Achieve peak performance with legal packages tailored to your unique needs and benefit from our location only a short walk to the Courthouse. 

Harbor Room
Cardiff Room

Connect and Collaborate

Create the optimal office space with unique venues that offer versatility and privacy.

Pacifica Boardroom

Wellness Meets Business

Westin’s signature clutter free set-up streamlines productivity and supports sustainability.

Meeting room with rows of chairs and tables, two s

Energize and Inspire

Abundant natural light and San Diego sunshine energizes and enlivens many of our rooms.

Customize Your Event
Creative Banquet Menus

Fuel your meetings with pre-designed banquet menus featuring fresh ingredients that promise to nourish and delight, or collaborate with our Executive Chef and Event Team to create a custom menu. 

Unique Event Settings

In addition to our outdoor event venues, our Restaurant Private Dining Room can accommodate flexible set-ups for group dining, receptions and board meetings. 

On-Site Audio Visual 

Encore, our on-site audio visual partner, is ready to assist in making your event unforgettable with cutting-edge technology and full-service event production.

Extensive Branding Opportunities

Elevate your event with branding opportunities available throughout the hotel. Make a statement at arrival with options that include brand flags on the front drive and gobo projections behind the Front Desk. Personalize your decor with everything from internet splash pages and carpet stickers to outdoor wall projections.

Off-Site Event Venues

Take advantage of our Downtown San Diego location and host an off-site event within walking distance. Connect with your Event Manager to learn more about group dining and activities in the Gaslamp Quarter, Little Italy, and along the waterfront.

Harbor Terrace

Weddings & Occasions

Plan an elegant San Diego wedding in one of two ballroom event venues with room for up to 950 guests

Let the skyline of downtown San Diego serve as the perfect backdrop to your wedding or bridal party Learn More
Exchange your wedding vows on our terrace, a rooftop wedding venue overlooking downtown San Diego Learn More
Enhance your wedding reception with a customizable catering menu curated by our expert culinary team Learn More
From selecting event spaces to outings in downtown San Diego, our event planners see to everything Learn More
Invite your wedding party to a night on the town with our location near downtown San Diego nightlife Learn More

The Perfect Partnership

The vibrant ballroom settings, enchanting garden backdrops and rooftop wedding venues at The Westin San Diego Gaslamp Quarter set the stage for awe-inspiring celebrations in downtown San Diego. We are committed to helping you feel your best on your special day and every moment leading up to it. With our intuitive service, enriching amenities, beautiful venues and customizable wedding and event packages, we strive to ensure that your celebration comes to life flawlessly.

Romantic Setting with Outdoor Terrace

San Diego Ballroom

Enhanced by a neutral color palette, contemporary details, and soft lighting, the San Diego Ballroom offers a beautiful backdrop for wedding receptions and special celebrations. Add a memorable outdoor element and stunning San Diego views to your big day with the adjoining Garden Terrace - perfect for wedding ceremonies or event lounge space. Ask about our outdoor games available to enliven your event.

San Diego Ballroom Social

Your Venue for Grand Celebrations

California Ballroom

Create the wedding reception you've always dreamed of in the elegantly appointed California Ballroom. Ascend the grand lobby staircase to enter the sophisticated ballroom setting boasting a neutral design palate to allow for your event personalization. Natural light illuminates the adjoining grand foyer - an inviting setting for cocktail hour and event lounge space. 

California Ballroom - Reception Setup
A Venue for Every Special Event

Our San Diego Ballroom and adjoining Garden Terrace are the perfect venues for your Quinceanera celebration. Let us help you plan a special celebration with everything from the apple cider toast and personalized 2-course menu to outdoor games for all ages on the outdoor terrace. 

High School Proms

Dance the night away in the San Diego Ballroom and enjoy photos under the moonlight on the Garden Terrace. Let us help bring your event theme to life through tailored menus with a touch of whimsy.

Bar and Bat Mitzvahs

Celebrate your Bar or Bat Mitzvah surrounded by family and friends in one of our Ballrooms or the outdoor Garden Terrace. Personalize your celebration with mocktails, themed menus and gobo projections with your name.

Charity Galas

At The Westin San Diego Gaslamp Quarter, we strive to be a force for good and proudly show our appreciation and support for non-profits by partnering with you to host successful events. Non-profit event packages include the enhancement option of a "501C3 Giveback Cocktail" created exclusively for your event with a $1 donation to your organization for each one sold.

Military Balls

We understand the unique event needs for military occasions and are honored to take care of the details including rehearsal time, professional coordination of military protocol, childcare rooms, POW/MIA table arrangements, and specially created military menus.

Frequently Asked Questions