2,857 Kilometers • 10 Sovereign Nations

Danube — The Great Liquid Spine of Europe

From the misty springs of Germany's Black Forest through imperial capitals and towering karst canyons to the virgin wetlands of the Black Sea Delta.

2,857 km
Total Length
10
Riparian States
4
National Capitals
6,500 m³/s
Delta Discharge
Continental Transit

The Trans-European Waypoints

KM 2,857 (Origin)
Donaueschingen
🇩🇪 Germany
KM 1,920
Vienna
🇦🇹 Austria
KM 1,869
Bratislava
🇸🇰 Slovakia
KM 1,646
Budapest
🇭🇺 Hungary
KM 1,170
Belgrade
🇷🇸 Serbia
KM 943
Iron Gates
🇷🇴 Romania / 🇷🇸 Serbia
KM 0 (Terminus)
Sulina / Delta
🇷🇴 Romania / 🇺🇦 Ukraine
Curated Expeditions

Major River Basins & Epic Stops

Aerial view of Vienna waterfront along the Danube river with modern bridges and imperial architecture
AUSTRIA • UPPER DANUBE
Imperial Capital Alte Donau Wachau Gateway

Vienna: Imperial Splendor & Waterfront Living

Where grand Habsburg palaces meet 21 kilometers of recreational islands. Sail past the Donauturm, historic Prater park, and the serene arms of the Old Danube while experiencing classical Danube waterway engineering.

River Km
1,920 – 1,940
Average Depth
3.2 Meters
Key Highlight
Danube Island
Panoramic night view of the illuminated Hungarian Parliament building on the banks of the Danube in Budapest
HUNGARY • MIDDLE BASIN
Iconic Bridges Thermal Banks Danube Bend

Budapest: Queen of the Danube Panorama

Nowhere is the river more theatrical than where it bisects hilly Buda and flat Pest. Sail beneath the historic Széchenyi Chain Bridge, gaze upon the illuminated Gothic Parliament, and discover Margaret Island’s green heart.

River Km
1,640 – 1,655
Channel Width
350 – 500 m
Key Highlight
Parliament Vista
Dramatic limestone cliff gorge of the Iron Gates on the Danube border between Serbia and Romania
ROMANIA & SERBIA • CARPATHIAN PASS
Djerdap National Park Canyon Gorge Hydroelectric Feat

The Iron Gates: Dramatic Carpathian Gorges

The mighty river carves a 134-kilometer gorge between the Southern Carpathian Mountains and the Balkan Mountains. Discover the colossal 43-meter rock sculpture of King Decebalus and the ancient Golubac fortress guarding the river entrance.

River Km
943 – 1,077
Gorge Depth
Up to 75m
Key Highlight
Decebalus Rock Face
Untouched serene wetland channels in the Danube Delta with water lilies and morning mist
ROMANIA • UNESCO BIOSPHERE
UNESCO Biosphere Bird Sanctuary Black Sea Terminus

Danube Delta: Europe’s Wild Wetland Paradise

Spanning over 5,165 km², the Danube Delta is the best-preserved river delta in Europe. Over 300 bird species, floating reed islands, wild horses in Letea Forest, and labyrinthine water channels leading into the Black Sea.

River Km
0 – 120 (Channels)
Biodiversity
300+ Avian Species
Main Branches
Chilia, Sulina, Sf. Gheorghe
Navigation Knowledge

River Craft, Hydrodynamics & Logistics

River cruise ship sailing calmly along scenic European river banks

Cruising Vessels & Cabin Classes

Understanding river gauge limits, low-bridge collapsible wheelhouses, and how European longships maneuver 135m hulls through tight lock passages.

Vessel Guide →
Lush green river valley with medieval castle ruins and terraced vineyards in Wachau Valley

The Wachau Valley UNESCO Heritage

Terraced vineyards, baroque Melk Abbey, and medieval Dürnstein Castle towering over the scenic bends of lower Austria.

Explore Wachau Route →
Coastline where the fresh river waters meet the deep blue expanse of the Black Sea

Sulina Mile Zero Expedition

The easternmost point of the European Union where old lighthouses mark the historic entry gate into the Romanian Black Sea coast.

Read Terminus Report →