Altena Castle

Castle Hilltop medieval castle overlooking the Lenne valley

Perched above Altena, Altena Castle is a medieval hill castle with a museum and walking routes; visitors come for the ramparts, museum displays and valley views over the Lenne.

Main image

Altena Castle (Burg Altena) is a medieval hill castle above the town of Altena in North Rhine-Westphalia, Germany, with origins in the early 12th century. The site is notable both for its medieval structures and for hosting the first organised youth hostel in 1914.

Visitors can walk the castle ramparts, see the restored keep and interpretive exhibitions covering the castle’s medieval history, and use the on-site youth hostel and visitor facilities. The castle sits prominently above the Lenne valley and provides panoramic views of the surrounding Sauerland hills.

The fortress was founded in the early 1100s by the regional noble families who controlled trade and routes through the Lenne valley. Over the medieval and early modern periods the site was rebuilt and adapted; in the 20th century it gained new use as the site of the first youth hostel and as a local museum.

The castle crowns a rocky spur directly above Altena town in the Märkischer Kreis, in the Sauerland region of western Germany, roughly within driving distance of the Ruhr area and about 40 km from the Dortmund metropolitan area.

  • Age and siting: The original castle dates to the early 12th century and sits on a rocky spur above the town of Altena.
  • Youth hostel founding: The youth hostel established at the castle in 1914 by Richard Schirrmann is recognised as the founding site of the international youth hostel movement.

What to See #

  • Castle keep: A preserved medieval tower and curtain-wall remains form the highest point and offer views across the Lenne valley. The tower dates to the original 12th-century castle core.
  • Youth hostel: An on-site youth hostel founded in 1914 established the castle as the location of the world's first organised youth hostel movement and still offers accommodation and visitor facilities.
  • Castle museum: Exhibition rooms in the castle present medieval history of the site and the surrounding Märkischer Kreis; displays cover the Counts who founded the castle and local regional history.
Altena Castle
Burg Altena, 58762 Altena, North Rhine-Westphalia, Germany
51.2999, 7.6751
Mar-Oct daily 10am-6pm, Nov-Feb weekends 11am-4pm
€6-8 (adult seasonal ticket)

How to Get to Altena Castle #

Altena is about 35 km southeast of Dortmund. From Altena town center, the castle is a 10-15 minute uphill walk; local buses stop near Burgstraße. By car, follow signage for Burg Altena and park in the designated lot below the hill.

Tips for Visiting Altena Castle #

  • Enter through the old gatehouse (marked Burg) for the best view of the courtyard; ticket office is nearby.
  • Don't skip the youth hostel museum: Burg Altena hosted the first organized youth hostel in 1914 and that small exhibit is oddly moving.
  • Climb the ramparts at sunset - the Lenne valley light is unexpectedly cinematic.

Best Time to Visit Altena Castle #

Late spring through early autumn gives the best access to exhibitions, ramparts, and the historic youth hostel exhibits.

Spring-Early Autumn (Apr-Sep)
Apr-Sep · 8°C to 22°C
Warmer weather opens the courtyards and museums; hiking on the castle hill is pleasant.
Winter (Dec-Feb)
Dec-Feb · −5°C to 5°C
Quieter, atmospheric; castle looks striking with a dusting of snow but some facilities are reduced.

Weather & Climate near Altena Castle #

Climate

Altena Castle's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in July) and cold winters (coldest in January). Temperatures range from -2°C to 22°C. Abundant rainfall (1056 mm/year), wettest in December, distributed fairly evenly throughout the year.

Air Quality: AQI 36 Good
Best Time to Visit
SeptemberJulyAugust
Temperature & Rainfall
Temperature Range
39°
Warmest Month
-18°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 4°C and lows of -1°C. Significant rainfall (106 mm) and mostly overcast skies.

40 Poor

Comfort

Feels Like Cold
C
Temperature
-1°
94%
Humidity
Very Humid

Weather

106 mm
Rainfall
4.2 m/s
Wind
Light Breeze
0.0
UV Index
Low
8.2h daylight

February

February is cold with highs of 4°C and lows of -2°C. Moderate rainfall (75 mm) and mostly overcast skies.

42 Poor

Comfort

Feels Like Cold
C
Temperature
-2°
91%
Humidity
Very Humid

Weather

75 mm
Rainfall
4.0 m/s
Wind
Light Breeze
0.1
UV Index
Low
9.8h daylight

March

March is cold with highs of 8°C and lows of 1°C. Regular rainfall (87 mm) and mostly overcast skies.

44 Poor

Comfort

Feels Like Cold
C
Temperature
86%
Humidity
Very Humid

Weather

87 mm
Rainfall
4.1 m/s
Wind
Light Breeze
0.4
UV Index
Low
11.7h daylight

April

April is cold with highs of 12°C and lows of 3°C. Moderate rainfall (68 mm) and partly cloudy skies.

58 Acceptable

Comfort

Feels Like Cold
C
Temperature
12°
80%
Humidity
Very Humid

Weather

68 mm
Rainfall
3.6 m/s
Wind
Light Breeze
0.7
UV Index
Moderate
13.7h daylight

May

May is cool with highs of 17°C and lows of 7°C. Moderate rainfall (75 mm) and mostly overcast skies.

62 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
17°
79%
Humidity
Very Humid

Weather

75 mm
Rainfall
3.3 m/s
Wind
Light Breeze
1.1
UV Index
High
15.4h daylight

June

June is cool with highs of 19°C and lows of 10°C. Regular rainfall (90 mm) and mostly overcast skies.

62 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
10° 19°
76%
Humidity
Very Humid

Weather

90 mm
Rainfall
3.2 m/s
Wind
Light Breeze
1.3
UV Index
High
16.3h daylight

July

July is cool with highs of 22°C and lows of 12°C. Regular rainfall (98 mm) and mostly overcast skies.

64 Good

Comfort

17°
Feels Like Cool
17°C
Temperature
12° 22°
71%
Humidity
Very Humid

Weather

98 mm
Rainfall
3.2 m/s
Wind
Light Breeze
1.3
UV Index
High
15.9h daylight

August

August is cool with highs of 21°C and lows of 12°C. Regular rainfall (84 mm) and mostly overcast skies.

64 Good

Comfort

16°
Feels Like Cool
16°C
Temperature
12° 21°
72%
Humidity
Very Humid

Weather

84 mm
Rainfall
3.0 m/s
Wind
Light Breeze
1.0
UV Index
High
14.4h daylight

September

September is cool with highs of 17°C and lows of 9°C. Regular rainfall (85 mm) and partly cloudy skies.

66 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
17°
76%
Humidity
Very Humid

Weather

85 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.7
UV Index
Moderate
12.5h daylight

October

October is cold with highs of 13°C and lows of 6°C. Moderate rainfall (79 mm) and mostly overcast skies.

52 Acceptable

Comfort

Feels Like Cold
C
Temperature
13°
85%
Humidity
Very Humid

Weather

79 mm
Rainfall
3.6 m/s
Wind
Light Breeze
0.3
UV Index
Low
10.5h daylight

November

November is cold with highs of 8°C and lows of 2°C. Regular rainfall (99 mm) and mostly overcast skies.

44 Poor

Comfort

Feels Like Cold
C
Temperature
92%
Humidity
Very Humid

Weather

99 mm
Rainfall
3.8 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.7h daylight

December

December is cold with highs of 5°C and lows of 0°C. The wettest month with heavy rain (110 mm) and mostly overcast skies.

40 Poor

Comfort

Feels Like Cold
C
Temperature
94%
Humidity
Very Humid

Weather

110 mm
Rainfall
3.9 m/s
Wind
Light Breeze
0.0
UV Index
Low
7.7h daylight

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