Tour Agency. We are more than just a travel agency at Sem-Zang Tours. We are committed to offering the best travel services and are a company that the Royal Government of Bhutan has authorized and accredited. Our years of knowledge, along with our vigor and excitement, enable us to give you an unforgettable experience. As evidence of our dedication to making your experience in Bhutan really unique, our motto, “Together we create HAPPINESS” may be seen on our website.