The Westin Boston Seaport District — Event Spaces, Floor Plans & Capacities

425 Summer St, Boston, MA 02210

30 rooms · 91,073 sq ft8,461 m² of event space, per the hotel

With 30 event rooms and 91,073 sq ft8,461 m² of event space, per the hotel, The Westin Boston Seaport District is a flexible choice for meetings and celebrations in Boston. The largest space is Galleria Exhibit Hall, 19,160 sq ft1,780 m². It holds up to 2,000 guests. Full capacity details for each room are below.

Between them, the 30 rooms accommodate theater-style sessions for up to 1,500, seated banquets for 1,080 and standing receptions for 2,000. 6 smaller rooms suit breakouts and board meetings. Per-room dimensions and every published setup figure are listed below.

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Floor plans

Detailed floor plans for The Westin Boston Seaport District are published on the venue’s official site.

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Room capacities & dimensions

59 configurations listed. Combined and divided set-ups are listed under their room.

Room capacities and dimensions for The Westin Boston Seaport District
SpaceCeiling
AdamsPlan this room →833 sq ft77 m²11.5 ft3.5 m509048802630
AlcottPlan this room →1,035 sq ft96 m²11.5 ft3.5 m60100631052630
BulfinchPlan this room →508 sq ft47 m²11.5 ft3.5 m204024401418
BurroughsPlan this room →1,492 sq ft139 m²11.5 ft3.5 m120160841603439
CarltonPlan this room →1,181 sq ft110 m²11.5 ft3.5 m80120601303436
Commonwealth Balllroom APlan this room →1,212 sq ft113 m²14 ft4.3 m80120631283236
Commonwealth Balllroom BPlan this room →1,267 sq ft118 m²14 ft4.3 m80120631283236
Commonwealth Ballroom CPlan this room →1,477 sq ft137 m²14 ft4.3 m110150841103242
3 configurations with Commonwealth Ballroom C
Combined and divided set-ups that include Commonwealth Ballroom C
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Commonwealth BallroomPlan this room →3,956 sq ft368 m²14 ft4.3 m260390240390—81
Commonwealth Ballroom A & BPlan this room →2,478 sq ft230 m²14 ft4.3 m200250120260—50
Commonwealth Ballroom B & CPlan this room →2,744 sq ft255 m²14 ft4.3 m200280120200—44
DouglassPlan this room →1,254 sq ft117 m²12 ft3.7 m80120781203842
Executive Board RoomPlan this room →722 sq ft67 m²12 ft3.7 m————18—
FaneuilPlan this room →1,298 sq ft121 m²11.5 ft3.5 m80120781203842
FrostPlan this room →265 sq ft25 m²8.5 ft2.6 m————10—
Galleria Exhibit HallPlan this room →19,160 sq ft1,780 m²14.5 ft4.4 m1,050——2,000——
Grand Ballroom FoyerPlan this room →6,444 sq ft599 m²24 ft7.3 m———695——
Grand Ballroom Section APlan this room →5,047 sq ft469 m²24 ft7.3 m320552270540——
6 configurations with Grand Ballroom Section A
Combined and divided set-ups that include Grand Ballroom Section A
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Grand BallroomPlan this room →15,077 sq ft1,401 m²24 ft7.3 m1,0801,5008601,500——
Grand Ballroom A & BPlan this room →10,110 sq ft939 m²24 ft7.3 m7201,1005701,000——
Grand Ballroom B-EPlan this room →10,030 sq ft932 m²24 ft7.3 m7201,1005701,000——
Grand Ballroom C & DPlan this room →3,266 sq ft303 m²24 ft7.3 m240340168330——
Grand Ballroom C-EPlan this room →4,967 sq ft461 m²25 ft7.6 m320460270500——
Grand Ballroom D & EPlan this room →3,331 sq ft309 m²24 ft7.3 m240360168330——
Grand Ballroom Section BPlan this room →5,064 sq ft470 m²24 ft7.3 m320552270540——
Grand Ballroom Section CPlan this room →1,636 sq ft152 m²24 ft7.3 m120150841653645
Grand Ballroom Section DPlan this room →1,630 sq ft151 m²24 ft7.3 m120150841653645
Grand Ballroom Section EPlan this room →1,701 sq ft158 m²24 ft7.3 m120180841653545
GriffinPlan this room →679 sq ft63 m²11.5 ft3.5 m407033601818
HalePlan this room →564 sq ft52 m²11.5 ft3.5 m304024401424
HancockPlan this room →854 sq ft79 m²14 ft4.3 m507045802024
Harbor Balllroom 3Plan this room →2,444 sq ft227 m²19 ft5.8 m200260160270—50
Harbor Ballroom 1Plan this room →3,318 sq ft308 m²19 ft5.8 m290360160360—66
3 configurations with Harbor Ballroom 1
Combined and divided set-ups that include Harbor Ballroom 1
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Harbor BallroomPlan this room →7,987 sq ft742 m²19 ft5.8 m680860390850——
Harbor Ballroom 1 & 2Plan this room →5,543 sq ft515 m²19 ft5.8 m490580290615——
Harbor Ballroom 2 & 3Plan this room →4,666 sq ft433 m²19 ft5.8 m200500280270—50
Harbor Ballroom 2Plan this room →2,226 sq ft207 m²19 ft5.8 m200240130240—48
Harbor Ballroom FoyerPlan this room →5,487 sq ft510 m²11.5 ft3.5 m———500——
Independence BoardroomPlan this room →522 sq ft48 m²11.5 ft3.5 m————16—
LewisPlan this room →1,349 sq ft125 m²11.5 ft3.5 m90140721302833
Marina Ballroom 1Plan this room →2,031 sq ft189 m²13.5 ft4.1 m1201921282353848
6 configurations with Marina Ballroom 1
Combined and divided set-ups that include Marina Ballroom 1
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Marina BallroomPlan this room →6,170 sq ft573 m²13.5 ft4.1 m420—378650——
Marina Ballroom 1 & 2Plan this room →3,483 sq ft324 m²13.5 ft4.1 m2303242134006054
Marina Ballroom 1-3Plan this room →4,888 sq ft454 m²13.5 ft4.1 m3484563065608481
Marina Ballroom 2 & 3Plan this room →2,859 sq ft266 m²13.5 ft4.1 m2202641863154848
Marina Ballroom 2-4Plan this room →4,143 sq ft385 m²13.5 ft4.1 m3003962584507272
Marina Ballroom 3 & 4Plan this room →2,564 sq ft238 m²13.5 ft4.1 m1902641502824439
Marina Ballroom 2Plan this room →1,452 sq ft135 m²13.5 ft4.1 m110132931703239
Marina Ballroom 3Plan this room →1,407 sq ft131 m²13.5 ft4.1 m11092931683239
Marina Ballroom 4Plan this room →1,284 sq ft119 m²13.5 ft4.1 m80132721303239
OtisPlan this room →1,377 sq ft128 m²14 ft4.3 m90140721303842
PainePlan this room →737 sq ft68 m²14 ft4.3 m406030601418
PavilionPlan this room →4,846 sq ft450 m²24 ft7.3 m320500342600——
QuincyPlan this room →601 sq ft56 m²14 ft4.3 m305024501418
ReverePlan this room →757 sq ft70 m²14 ft4.3 m406030601418
SaucietyPlan this room →2,898 sq ft269 m²13 ft4 m———300——
StonePlan this room →1,416 sq ft132 m²12.5 ft3.8 m90140721403842
WebsterPlan this room →1,424 sq ft132 m²14 ft4.3 m90140721403842
Additional spaces (dimensions only) (1)
Additional spaces with published dimensions only at The Westin Boston Seaport District
SpaceSq ft / m²Ceiling
ElmPlan this room →180 sq ft17 m²9 ft2.7 m

Figures from published venue data; blank cells mean the venue hasn’t published that number. Verify final counts with the venue.

Frequently asked questions

How many event rooms does The Westin Boston Seaport District have?

The Westin Boston Seaport District has 30 event rooms and 91,073 sq ft of event space, per the hotel. 59 configurations are listed on this page.

What is the largest space at The Westin Boston Seaport District?

Galleria Exhibit Hall, 19,160 sq ft: 121 × 187 ft, 1,050 banquet.

How many people can The Westin Boston Seaport District seat for a banquet?

Up to 1,080 in Grand Ballroom. The next largest room, Galleria Exhibit Hall, seats 1,050.

What is the ceiling height at The Westin Boston Seaport District?

The highest ceiling is 24 ft, in Grand Ballroom Foyer.

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