Open Travel Guide
History of Schleswig-Holstein

Schleswig-Holstein History & Heritage Guide 2026

The history of Schleswig-Holstein told through its places: sites worth the detour and the context they need.

This guide covers 13+ historical sites in Schleswig-Holstein — Holstentor, Lubeck Old Town (Hanseatic UNESCO Site) and Marienkirche (St. Mary's Church Lubeck) top the list. Every recommendation carries its practical details: typical costs, the best time to visit, and what to know before you commit.

Weather through the year in Schleswig-Holstein

JAN FEB MAR APR 13° MAY 17° JUN 19° JUL 19° AUG 16° SEP 12° OCT NOV DEC

Best time Shoulder Worth avoiding

Average daytime temperature in °C. Figures are for Schleswig-Holstein.

Schleswig-Holstein is Germany's northernmost federal state, a narrow peninsula wedged between the North Sea and the Baltic Sea, bordering Denmark. It combines windswept Wadden Sea islands like Sylt and Amrum, the historic Hanseatic port of Lubeck, the sailing capital Kiel, and the tranquil lake district of Holstein Switzerland. The state is defined by water on nearly every side, a mix of German, Danish, and North Frisian culture, and a laid-back maritime pace of life.

Historical timeline

Key moments that shaped Schleswig-Holstein.

  1. 1

    Construction of the Danevirke Begins

    circa 500-700 AD

    Danish rulers begin building the Danevirke, a defensive earthwork wall across the base of the Jutland peninsula near modern Schleswig, to guard against Frankish and Saxon incursions

  2. 2

    Haithabu Founded as a Trading Hub

    804-808 AD

    The Viking-age trading settlement of Haithabu (Hedeby) is established on the Schlei fjord, growing into one of northern Europe's largest early medieval marketplaces

  3. 3

    Treaty of Heiligen Sets the Eider Border

    811 AD

    Frankish emperor Charlemagne and Danish king Hemming agree the Eider river as the border between the Frankish empire and Denmark, a boundary that shaped the region for a millennium

  4. 4

    Founding of Lubeck

    1143

    Count Adolf II of Schauenburg founds Lubeck on a peninsula in the Trave river; the town is refounded in 1159 by Henry the Lion after a fire and grows into the leading Baltic trading city

  5. 5

    Battle of Bornhoved

    1227

    The counts of Holstein and allied German princes defeat the Danish king Valdemar II, ending Danish dominance over Holstein and northern Germany

  6. 6

    Lubeck Leads the Hanseatic League

    13th-15th century

    Lubeck becomes the unofficial capital of the Hanseatic League, a confederation of trading cities that dominates Baltic and North Sea commerce for two centuries

  7. 7

    Treaty of Ripen

    1460

    The nobility of Schleswig and Holstein elect the Danish king Christian I as their duke and count, with the treaty declaring the two territories 'forever undivided,' a phrase that echoes through centuries of later political disputes

  8. 8

    Division into Ducal Lines

    1544

    Schleswig and Holstein are partitioned among royal and ducal branches, including the Gottorf line based at Schloss Gottorf, creating overlapping and competing sovereignties

  9. 9

    First Schleswig War

    1848-1851

    German-speaking Schleswig-Holsteiners rise up against Danish rule amid the wave of European nationalist revolutions; Denmark ultimately retains control after Prussian and German Confederation forces withdraw

  10. 10

    Second Schleswig War

    1864

    Prussia and Austria defeat Denmark and force the cession of Schleswig, Holstein, and Lauenburg, ending centuries of Danish sovereignty over the duchies

  11. 11

    Prussian Province of Schleswig-Holstein

    1867

    After the Austro-Prussian War, Prussia annexes the duchies outright and organizes them as the Province of Schleswig-Holstein

  12. 12

    Schleswig Plebiscites

    1920

    Following the Treaty of Versailles, referendums split Schleswig by language and identity: the northern zone votes to join Denmark while the southern zone, including the city of Schleswig, remains part of Germany

  13. 13

    Postwar Refugee Crisis and Statehood

    1945-1946

    Schleswig-Holstein absorbs hundreds of thousands of refugees and expellees after World War II, and in 1946 the British occupation authorities establish it as a state (Land) of what becomes West Germany

Historical sites

Places where Schleswig-Holstein's past comes alive.

Late Gothic / Brick Gothic (15th century)

Holstentor

Where: Lubeck

Admission: Adult: EUR 8 (approx $9.30) | Child: Free under 18

Hanseatic medieval (13th-17th century)

Lubeck Old Town (Hanseatic UNESCO Site)

Where: Lubeck

Admission: Adult: Free | Child: Free

Brick Gothic (13th-14th century)

Marienkirche (St. Mary's Church Lubeck)

Where: Lubeck

Admission: Adult: Free entry, EUR 4 (approx $4.65) donation requested | Child: Free

Renaissance / Baroque ducal residence (16th-17th century)

Schloss Gottorf

Where: Schleswig

Admission: Adult: EUR 14 (approx $16.25) | Child: EUR 5 (approx $5.80); free 6 and under

Viking Age (8th-11th century)

Haithabu Viking Settlement and Museum

Where: Busdorf, near Schleswig

Admission: Adult: EUR 9 (approx $10.45) | Child: EUR 3 (approx $3.50); family EUR 15 (approx $17.40)

Viking Age to medieval border fortification (5th-19th century)

Danevirke Defensive Wall

Where: Dannewerk, near Schleswig

Admission: Adult: Free to walk the earthworks; museum admission approx EUR 6 (approx $7) | Child: Free to walk the earthworks

Romanesque (12th century)

Ratzeburger Dom (Ratzeburg Cathedral)

Where: Ratzeburg

Admission: Adult: Free, donation of approx EUR 2 (approx $2.35) suggested | Child: Free

Gothic (14th-15th century)

Meldorfer Dom (Meldorf Cathedral)

Where: Meldorf

Admission: Adult: Free, donation appreciated | Child: Free

Baroque ducal residence (17th century)

Schloss Plon (Plon Castle)

Where: Plon

Admission: Adult: EUR 8 (approx $9.30) | Child: EUR 4 ages 6-14 (approx $4.65); free under 6

Baroque / Neoclassical ducal residence (17th-19th century)

Schloss Eutin (Eutin Castle)

Where: Eutin

Admission: Adult: Approx EUR 8.50 (approx $9.85) | Child: Approx EUR 4 (approx $4.65)

Northern Renaissance (16th century)

Schloss Glucksburg (Glucksburg Castle)

Where: Glucksburg

Admission: Adult: EUR 11 (approx $12.75) | Child: EUR 7 (approx $8.10); family from EUR 15 (approx $17.40)

Dutch Baroque settlement town (17th century)

Friedrichstadt Old Town (Dutch Settler Town)

Where: Friedrichstadt

Admission: Adult: Free to walk; canal boat tour approx EUR 8 (approx $9.30) | Child: Free to walk; reduced boat tour rate

20th century (World War One and Two memorial)

Laboe Naval Memorial (Marine-Ehrenmal)

Where: Laboe

Admission: Adult: EUR 7 (approx $8.10); combined with U-995 EUR 11 (approx $12.75) | Child: Reduced rate available, approx EUR 4 (approx $4.65)