About Us

Travel the world with the global leader in sightseeing and tours since 1910.

Book with a Brand you Trust

Discover new people, explore different ways of life and find yourself in a world you never knew existed. There are many who can take you sightseeing, but only with Gray Line will you feel like a local at each and every destination you visit.

For 100 years, Gray Line has been the trusted name in sightseeing tours around the world. With tours and excursions in more than 700 locations, spanning six continents, we are the largest sightseeing company in the world.

Founded in 1910, Gray Line has since grown into a global sightseeing network of local experts offering "one of a kind" itineraries in adventure, luxury and budget-friendly travel.

Scheduled Sightseeing Tours

Full and half day tours exploring the world’s most incredible cities, landmarks, natural wonders, cultures and much more.

Blue Diamond Collection

Premium experiences designed to bring out the local flavor and hidden treasures of each destination. Escape the ordinary by booking at least one Blue Diamond tour in all your travels.


Book tickets and excursions to landmarks and attractions in cities around the world. Swim with the dolphins in Cancun, visit the Miami Seaquarium, see a folklore ballet in Ecuador and much more.


Try hang-gliding, zip-lining, white water rafting and more with Gray Line! Don’t risk your vacation… trust our expert guides to take you off the beaten path for incredible experiences you can’t find anywhere else.


From the traditional marketplace to the trendiest shopping centers, Gray Line shows you the best deals, the most unique local shopping experiences and the perfect places to pick up souvenirs.


Get closer to nature while leaving as little impact on the environment as possible and improving the well-being of the local economy.


Gray Line offers adventures the whole family can enjoy in every destination. From city excursions and local attractions to theme parks and relaxing getaways, there’s something for everyone.


Explore the tradition of food and wine from around the world with Gray Line. We offer winery tours, cooking classes and much more in regions rich in the culinary tradition.

Why book with Gray Line

  • Book services direct from the source
  • Book with a brand you know and trust
  • No hidden fees 
  • Local customer service when you need it

Contact Gray Line



1835 Gaylord St Denver CO 80206 USA


Toll Free


International / Direct


Travel Agent Support