The Ambassador Room: The historic Ambassador Room—formerly known as the iconic Pump Room—offers a timeless setting steeped in glamour and legacy. With its grand proportions, dramatic architectural details, and storied past of hosting cultural icons, the space delivers an unforgettable backdrop for sophisticated celebrations and elevated private events. The Library Bar & Lounge: The Library Room at The Ambassador is an intimate, design-forward setting that blends classic Chicago charm with modern sophistication. Anchored by a stunning historic fireplace, the space features rich textures, warm lighting, and curated architectural details—creating a refined yet inviting backdrop for elevated social gatherings and stylish private events..