The National Stud Farm in Kladruby nad Labem is one of the oldest still operating stud farms in Europe. Here they breed the oldest variety of Czech coach horses – the Kladruber. Over the centuries of horse breeding and training, even the countryside around the stud farm has been perfectly adjusted to this purpose. Together the stud farm and this unique countryside have been classified as UNESCO WHS.
With this card sent by Lenka, I'm only missing one Czech UNESCO site.
The Landscape for Breeding and Training of Ceremonial Coach Horses in Kladruber nad Labem in East Bohemia near Pardubice is a unique monument that documents the centuries-old breeding and training of the white Kladruber. The Kladruby Stud Farm is also one of the oldest stud farms in the world. In 1579, Emperor Rudolf II promoted the farm to a stud farm for the imperial court and it has been the home of the Kladruber horses ever since.
Kladruber horses are currently bred both in Kladruby, which is particularly well known for its white variety, and in Slatiňany, known for its black variety. The main horse herd is housed in Kladruby nad Labem – there are about 500 pedigree studs, seas, and foals. - in: https://www.visitczechrepublic.com