Klet
A wooded summit with the oldest lookout tower in Bohemia and an observatory that finds asteroids.
Updated 19 October 2026
Klet rises to 1087 metres above Cesky Krumlov and is the highest point of the Blansky les, a block of beech and fir forest protected as a landscape area. On top stands the Josef tower, built in 1825 by Prince Josef Schwarzenberg, which is the oldest stone lookout tower in Bohemia and gives a view south to the Alps in clear weather. Beside it is the Klet Observatory, opened in 1957, which specialises in astrometry of small bodies - it has discovered a large number of asteroids and is one of the more productive European stations for follow-up observation of near-Earth objects, with a KLENOT telescope built for the purpose. The observatory runs public viewing sessions in summer. A chairlift, one of the longer ones in the country, runs up from Krasetin, and there are marked trails from Cesky Krumlov taking a couple of hours.
The landscape
- The Josef tower of 1825 - the oldest stone lookout tower in Bohemia.
- Klet Observatory - an asteroid-hunting station with public summer sessions.
- Alps on the horizon - visible south in clear weather.
- A chairlift - one of the longer ones in the country, from Krasetin.
When to go
May to September. Half a day.
What to expect
The summit is often in cloud. The chairlift is seasonal and stops in wind. Observatory sessions must be booked and depend on weather. The tower closes in winter.
Nearby
Cesky Krumlov is eight kilometres below; the Blansky les surrounds it.
Key facts
Source: Wikidata, item Q1757192, read on 18 October 2026.
What to pack for Klet
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Spare batteries + cards - Cold and long shoots drain power; never run out at the good light. Find on Amazon
- Layers for big temperature swings - Warm sun by day, near-freezing at night, even near the equator. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
Some links on this page are Amazon affiliate links - if you buy through them we may earn a small commission at no extra cost to you.
All packing kitsPlan your trip
Where to start if Klet is going on the list.
Booking links on this page are affiliate links - if you book through them we may earn a small commission at no extra cost to you. It never changes what we write about a place.
Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.



