We certify sustainability with transparency and efficiency, offering clear and professional solutions.
GSTC Hotel
The international certification for hotels committed to sustainable and responsible management.
GSTC Destination
The leading certification for destinations that place sustainability at the core of tourism development.
GSTC Tour Operator
The global standard for tour operators adopting sustainable practices across tours and supply chains.
GSTC Attractions
The global criterias for attractions committed to responsible visitor experiences and sustainable operations.
GSTC MICE
The global standards for the MICE industry (Meetings, Incentives, Conferences and Exhibitions) committed to sustainable management.
Reliable certifications, no compromise.
This is the Vireo approach:
Only internationally recognized standards
Self-declarations are not equivalent to certifications. We only follow official and internationally recognized standards, which are truly effective for businesses.
Independent, impartial and transparent
Vireo operates with complete autonomy and impartiality. The absence of conflicts of interest ensures the objective evidence of assessments and the quality of audits.
Immediate responsiveness
Our responsiveness is proven: within 48 hours, we provide quotations, general information and we are ready to take the first steps, so as not to slow down the certification process.




