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7 hotels in Pennsylvania hold Green Key certification. Each one is audited by an outside body, on a schedule it does not set itself.
Wikimedia CommonsWind Creek BethlehemLarge luxury resort and casino in Bethlehem, featuring upscale accommodations and extensive entertainment facilities. Offers multiple swimming pools, Independently certified
Wikimedia CommonsThe Warwick Hotel Rittenhouse SquareHistoric and elegant hotel in Rittenhouse Square, featuring contemporary guest rooms and professional services. Offers refined accommodations and easyIndependently certified
Wyndham Philadelphia Historic DistrictContemporary hotel in Philadelphia's historic district, featuring well-appointed guest rooms and an outdoor pool. Offers professional business facilitIndependently certified
Wikimedia CommonsSofitel PhiladelphiaSophisticated luxury hotel in downtown Philadelphia, featuring elegant French design and professional service. Offers refined guest rooms, fine diningIndependently certified
Wikimedia CommonsHotel Palomar PhiladelphiaStylish boutique hotel near Rittenhouse Square, known for its creative design and personalized service. Features contemporary guest rooms, a vibrant aIndependently certified
Hyatt Regency PittsburgUpscale airport hotel connected to Pittsburgh International Airport, offering convenient access for travelers. Features modern guest rooms, meeting spIndependently certified
Wikimedia CommonsFairmont PittsburghLuxury hotel in downtown Pittsburgh, featuring a sleek modern design and spectacular city views. Offers upscale accommodations, a high-end spa, and prIndependently certifiedGreen Key audits a hotel against roughly 100 criteria, some mandatory and some scored, covering water and energy use, waste separation, cleaning chemicals, food sourcing and staff training. A hotel applies, documents each criterion, and is then visited on site. Certification runs for one year, so a hotel keeps it only by re-submitting evidence and passing another visit. It is the largest scheme in this catalogue and the one you will meet most often across Europe.
Green Key measures management practice, not carbon. A large hotel with a pool and air conditioning can hold the certificate while using far more energy per guest than an uncertified guesthouse down the road — it is being judged on whether it manages its resources deliberately, not on the size of its footprint. The scoring is also weighted towards documentation, so a hotel with good records can outscore one that quietly does better.