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Use our knowledge to experience to exciting destinations like a local



Our tours are highly customized and meticulously researched and updated by our team of experts. If you would like a custom program for your group (10 or more) please contact us



 We aren’t about “just travel”. We’re about creating lasting memories and enriching yourself with unique cultural experiences and precious moments to last a lifetime



Let go, enjoy and let us take care of everything else

Allow us to help you create memories

See, Learn, Grow – open to Harvard students, alumni and partners only

HKS Serbia, Bosnia & Croatia Trek

9 Days
Availability : May 2020
Min Age : 18+
Max People : 50
View Details

Why Tupaia?

A tradition in travel management, trusted by thousands

With over 40 years experience in creating the most unique custom experiences at the most extravagant destinations – Sirius International has always pushed the frontiers of experiential travel. Our clients have ranged from corporations and ultra high net worth individuals, to student groups, religious pilgrimages and even political missions.

Having been elite grad-school students ourselves, we understand the needs and concerns – organizational, social and financial – of our graduate student clients. This is why we offer the best destinations, at the best prices – and collaborate with the decision makers at the respective schools, as well as the hottest venues and global brands, to make a customized program that will be talked about for years to come

Art of Discovery

Tours that even locals would go on. Join us!

Our new brand, Tupaïa, is named after the famed Polynesian navigator that helped guide Captain Cook’s voyages. Early Polynesians left their homes on tiny boats with expert navigators that spent years learning and memorizing the position of the stars and other natural phenomena – in order to be able to successfully guide their expeditions into the unknown, and back home. This resulted in the ancient Polynesians discovering spectacular new lands, including islands like Hawai’i.

Like Tupaïa, we see ourselves as pioneers in experiential travel. We offer our clients experiences that are unique and memorable. In order to achieve this, we need to constantly stay on top of emerging travel trends, discover the best new destinations and relentlessly keep evolving.

  • Grad trips – party it up with your crew before going back to the “real world”
  • Study Treks – go beyond the curriculum and immerse yourself in your topic/area of choice
  • Special invite-only events for our members coming soon


  • The ex-Yugoslavia Trek was an incredible experience filled with history, politics, and policy and one of the highlights of my time at HKS. The balance between education and vacation was perfect for the composition of the group. We spent 10 days in Serbia, Bosnia, Croatia and Montenegro taking in the beauty of the region while discussing past and current events. The planning and execution of the trek were great and the accommodations were very nice and comfortable. I strongly recommend this trek for anyone interested in the region.

    Mia Ozegovic
    HKS ex-YU Trek


Created by experts with local knowledge, and updated regularly. See our existing tours!


We pick the hotspots based on upcoming trends and what we feel is best for the client’s wishes. See some of the destinations we cover.

Study Treks

Specialized tours that go beyond what you learn at school. Meet high level leaders and experts in their fields, network and learn while having fun and seeing new places.

Special Interest

We create customized special interest tours for groups, whether it’s educational, religious, professional or other. Contacts us!

What you can expect from your experience with us

Past trip highlights


Why Travel with us?

ours created by the world’s best travel connoisseurs with deep local knowledge

  • Long term industry relationships and a boutique size ensure competitive prices even for high customization
  • A 40-year tradition of success – and counting!
  • Tens of thousands of satisfied clients worldwide
  • Tens of thousands of satisfied clients worldwide