The Global Sustainable Tourism Council establishes the highest level of global standards for sustainable travel and tourism. From environmental responsibility to ethical practices, GSTC Certification reviews over 200 criteria to ensure that our operations are comprehensively sustainable.

Certified by Control Union, 9 Big Bus Tours cities have applied for and achieved this prestigious certification as of 2025. We take pride in being leaders of sustainable tourism - upholding quality services while taking responsibility for the planet.

The following Big Bus Tours cities are GSTC certified:

• Big Bus Dublin
• Big Bus Rome
• Big Bus New York City
• Big Bus Miami
• Big Bus San Francisco
• Big Bus Dubai
• Big Bus Hong Kong
• Big Bus Singapore
• Big Bus Sydney