Take in historic Dubrovnik, which was once a fortress city, on Crossroads of the Adriatic: Croatia, Montenegro, Bosnia & Herzegovina, and Slovenia.
Top 10: Adventures with FREE Single Space Still Available in 2026
We believe solo travelers deserve to explore the world—without the large premium. That’s why we offer FREE Single Supplements on all Land Adventures. There’s still time to join us solo on our top 10 adventures with FREE single spaces still available in 2026.
1. Crossroads of the Adriatic: Croatia, Montenegro, Bosnia & Herzegovina, and Slovenia—Maximum group size: 16
Our most popular trip video:
- 18-day O.A.T. Small Group Adventure
2. Sicily's Ancient Landscapes & Timeless Traditions—Maximum group size: 16
Our most popular trip video:
- 16-day O.A.T. Small Group Adventure
3. Morocco Sahara Odyssey—Maximum group size: 16
Our most popular trip video:
- 16-day O.A.T. Small Group Adventure
4. Ancient Kingdoms: Thailand, Laos, Cambodia & Vietnam—Maximum group size: 16
Our most popular trip video:
- 20-day O.A.T. Small Group Adventure
5. Northern Italy: The Alps, Dolomites & Lombardy—Maximum group size: 16
Our most popular trip video:
- 16-day O.A.T. Small Group Adventure
6. Japan's Cultural Treasures—Maximum group size: 16
Our most popular trip video:
- 15-day O.A.T. Small Group Adventure
7. Inside Vietnam—Maximum group size: 16
Our most popular trip video:
- 20-day O.A.T. Small Group Adventure
8. Northern Spain & Portugal: Pilgrimage into the Past—Maximum group size: 16
Our most popular trip video:
- 17-day O.A.T. Small Group Adventure
9. Scotland Revealed: Legends, Lochs & Highland Landscapes—Maximum group size: 16
Our most popular trip video:
- 15-day O.A.T. Small Group Adventure
10. Heart of India—Maximum group size: 16
Our most popular trip video:
- 16-day O.A.T. Small Group Adventure
Related Articles
Top 10: Adventures for Spring & Summer 2026
Explore our most popular journeys departing between April and August.
Top 10: O.A.T. Adventures for Nature Photographers
Check out these top 10 O.A.T. adventures for nature photographers.
Something Special: 6 Limited-Departure Itineraries by Sea and River for 2026
See our 6 special departures by sea and river for 2026.
Related Trips
- Crossroads of the Adriatic: Croatia, Montenegro, Bosnia & Herzegovina, and Slovenia
- Sicily's Ancient Landscapes & Timeless Traditions
- Morocco Sahara Odyssey
- Ancient Kingdoms: Thailand, Laos, Cambodia & Vietnam
- Northern Italy: The Alps, Dolomites & Lombardy
- Japan's Cultural Treasures
- Inside Vietnam
- Northern Spain & Portugal: Pilgrimage into the Past
- Scotland Revealed: Legends, Lochs & Highland Landscapes
- Heart of India
Get The Inside Scoop On...
Subscribe to The Inside Scoop
Like what you see here? Receive weekly updates right in your inbox.
Articles In This Edition
Aria Kidding?
Center Stage
Float Like a Butterfly, Pray Like a Saint: Spain's Semana Santa
Japan Takes the Stage
Listening to Tuscany’s Most Famous Musical Sons
Top 10: Adventures with FREE Single Space Still Available in 2026