Second to None

The future of the workplace isn’t defined by square footage – it’s defined by experience. Second & Seneca offers exceptional office environments, elevated amenities, and an unwavering commitment to tenant experience to create a workplace where companies, and the people behind them, can perform at their highest level – a workplace that promotes collaboration, inspires creativity, and attracts talent. Second & Seneca is not only defined by its teal glass dome, but also by the transcending companies that call it home.

Work Exceptionally.

464,404 RSF

Trophy Office Tower

22 Stories

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Lounge seating in The Penthouse at sunset, with floor-to-ceiling windows over Puget Sound

Overview

464,404 RSF

Trophy Office Tower

  • The Penthouse – a dedicated amenity floor

    accommodates 350 people

    enclosed Rooftop Lounge

    Saunas & Cold Plunges

    Fitness Center

    Keane’s, an On-site Café

    1/1,100 RSF Parking Ratio

    Floor-to-Ceiling Windows

    7 Private Activated Terraces


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Awe-inspiring Amenities

Second & Seneca has been reimagined with thoughtful, hospitality-driven renovations designed to foster community, connection, and relaxation. The building’s bespoke amenity floor acts as an extension of the workplace; an engaging yet tranquil space perfectly curated to renew energy and inspire greatness. Take the elevator up to the 22nd Floor and experience The Penthouse.

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The Penthouse social lounge bar, set with wine and menus under glass cloud pendants, beside a window counter and stool overlooking the water
Multi-purpose room set up classroom-style: rows of long wood tables and grey chairs under a deep grid ceiling, with a lectern at the far end and floor-to-ceiling windows onto downtown towers
The Penthouse rooftop lounge: a concrete high table and woven bar stools beside a glass-walled pergola, with Elliott Bay and the port cranes beyond
Boardroom with a long oval walnut table, sage upholstered chairs and a blue carpet, a wall-mounted screen at the far end and floor-to-ceiling windows onto downtown towers

The Penthouse

What goes around, comes around and luckily for tenants, it’s the beautifully re-imagined 22nd floor amenity suite— built for innovative strategy sessions, social gatherings, and sauna breaks. Taking full floor advantage of the Puget Sound views accentuated by the floor-to-ceiling windows and rooftop lounge. Each space has been thoughtfully designed for fun and function.

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Keane’s café: a stone counter with a pastry case, wood café tables and chairs, and display shelves framing windows onto the street
A lounge off Keane’s café: a green velvet sofa and a blush armchair on a blue rug, a long dining table under a wall screen, and counter stools along the street windows

Keane’s

Located at Second & Seneca, Keane’s offers gourmet food and beverage options with seating options for every occasion. Work remotely at craft wood tables, connect with friends in comfortable lounge seating, or unwind on the outdoor patio.

OFFERINGS

Espresso Bar

Daily Grab & Go Specials

Fresh Baked Pastries

Curated Selection of Teas

Beer & Wine

The Penthouse from above: the green glass dome and the rooftop terraces with their two pergolas, with Elliott Bay, the Great Wheel and the Olympic Mountains beyond
The Penthouse rooftop lounge: a concrete high table and woven bar stools beside a glass-walled pergola, with Elliott Bay and the port cranes beyond
The Penthouse rooftop lounge: navy-cushioned teak armchairs around a round fire pit, a long timber bench by planted beds, and a pergola among downtown towers
A pizza on a peel coming out of the rooftop lounge’s white penny-tiled, wood-fired oven
Multi-purpose room set up classroom-style: rows of long wood tables and grey chairs under a deep grid ceiling, with a lectern at the far end and floor-to-ceiling windows onto downtown towers
Boardroom with a long oval walnut table, sage upholstered chairs and a blue carpet, a wall-mounted screen at the far end and floor-to-ceiling windows onto downtown towers
The Penthouse social lounge: a bar faced in patterned tile under clusters of glass pendant lights and a coffered wood ceiling, with sofas and windows over the water beyond
The Penthouse social lounge bar, set with wine and menus under glass cloud pendants, beside a window counter and stool overlooking the water
The wellness patio: a sofa, two armchairs and a stone coffee table under a louvred pergola among planters, with a glass-fronted sauna at the right
Wellness spa changing room: wood lockers and a bench, and a long vanity with backlit oval mirrors, leather stools and a dark stone basin before full-height curtains
Keane’s café: a stone counter with a pastry case, wood café tables and chairs, and display shelves framing windows onto the street
A lounge off Keane’s café: a green velvet sofa and a blush armchair on a blue rug, a long dining table under a wall screen, and counter stools along the street windows
The fitness center: squat racks and weights on one side, and a row of bikes, treadmills and cross-trainers under wall-mounted screens on the other
Conference room set up classroom-style, with rows of light wood tables and black mesh chairs facing a whiteboard, and tall windows onto the street
Four armchairs around a low wood table in an open office corner, with floor-to-ceiling windows over Elliott Bay and the port cranes
An open office floor with sun across the carpet, floor-to-ceiling windows over the water on one side and a kitchenette on the other

The Penthouse

Rooftop Lounge at The Penthouse

Rooftop Lounge at The Penthouse

Rooftop Lounge at The Penthouse

Multi-Purpose Room at The Penthouse

Boardroom at The Penthouse

Social Lounge at The Penthouse

Social Lounge at The Penthouse

Wellness Spa at The Penthouse

Wellness Spa at The Penthouse

Keane's Café

Keane's Café

Fitness Center

Conference Room

Water Views

Floor-to-ceiling Windows

Timeless Arrival

Work Lounge

Crowds walking the Seattle waterfront past Ivar’s Fish Bar

A vibrant city at your doorstep.

Second & Seneca is located in the heart of Seattle’s CBD and steps from Seattle’s redeveloped waterfront, retail core, and historic Pioneer Square neighborhood. Explore the city easily from Second & Seneca and embrace where the day takes you.

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Aerial view of the Seattle waterfront: the piers, the promenade park and Alaskan Way

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