
15 hotels in Las Vegas hold Green Key certification. Each one is audited by an outside body, on a schedule it does not set itself.
Wikimedia CommonsMandalay BayTropical-themed luxury resort and casino on the Las Vegas Strip, featuring an expansive beach and wave pool. Offers upscale accommodations, a massive Independently certified
Wikimedia CommonsVdara Hotel & SpaSleek luxury hotel and spa on the Las Vegas Strip, offering a non-gaming and smoke-free environment. Features modern suites with kitchenettes, a rooftIndependently certified
Wikimedia CommonsWyndham Grand DesertUpscale vacation resort located near the Las Vegas Strip, featuring spacious suite accommodations with kitchen facilities. Offers multiple outdoor swiIndependently certified
Wikimedia CommonsThe Mirage Resort & CasinoIconic Polynesian-themed resort and casino on the Las Vegas Strip, known for its lush tropical atrium and volcano. Features upscale guest rooms, a larIndependently certified
Wikimedia CommonsMGM Grand Las VegasOne of the largest resorts on the Las Vegas Strip, featuring an expansive casino and a grand pool complex. Offers upscale accommodations, Michelin-staIndependently certified
Wikimedia CommonsRio All-Suite Hotel & CasinoAll-suite hotel and casino located just off the Las Vegas Strip, featuring a vibrant Brazilian theme. Offers spacious guest rooms, a sandy beach pool,Independently certified
Wikimedia CommonsARIA Resort & CasinoLuxury high-tech resort and casino on the Las Vegas Strip, known for its sustainable design and sleek architecture. Features upscale suites, multiple Independently certified
Wikimedia CommonsNew York-New York Hotel & CasinoIconic New York City-themed resort and casino on the Las Vegas Strip, featuring a replica of the skyline and a roller coaster. Offers contemporary rooIndependently certified
Wikimedia CommonsLuxorPyramid-themed resort and casino on the Las Vegas Strip, featuring a unique slanting-wall architecture. Offers comfortable accommodations, large pool Independently certified
Wikimedia CommonsPark MGM Las VegasModern upscale resort and casino on the Las Vegas Strip, offering a fresh and contemporary atmosphere. Features stylish guest rooms, a large pool compIndependently certified
Wikimedia CommonsThe SignatureLuxury all-suite condo-hotel tower adjacent to the MGM Grand. Offers upscale accommodations with kitchenettes and private balconies, featuring a privaIndependently 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.