What is Gray Line?
Gray Line Worldwide, located in Denver, Colorado, is the corporate headquarters for over 100 independent Gray Line companies. Founded in 1910, Gray Line is widely recognized and respected as the world’s largest sightseeing tour company.
Welcome to Gray Line
From Anchorage to Amsterdam, Beijing to Boston and Istanbul to Iceland, you’ll find that Gray Line is the only sightseeing company in the world with operations on six continents under one name and one brand.
Gray Line is Sightseeing
New lands, New cultures. No matter where you are in the world, chances are you’ll find the leading tour company is the one with the world famous “Blue Diamond” branded vehicles. No one can take you inside your destination like Gray Line. With over 90 years of experience, we are the local experts in more than 150 destinations. All the new and interesting things you’ll learn, the most surprising might be what you learn about yourself.