The Hrádek u Nechanic Chateau was built as a representative and summer residence of the Harrach family in the years 1839 – 1857 by František Arnošt Count of Harrach (1799-1884), an important representative of the Jilemnice family line. A project developed by the English architect Edward Buckton Lamb (1805-1869) in the Tudor Gothic style served as a model for the construction of the romantic chateau. The construction work was led by the young Austrian architect Karl Fischer (1817-1856), who modified the plans and designed the decoration of the castle interiors. In addition to this equipment, made mainly by local craftsmen, a number of antiques were brought to the chateau, especially from Italy and Austria. Often these were entire portals, ceilings or complete furnishings of the entire room. Simultaneously with the construction of the chateau, in 1844 a part of the surrounding forest was modified by the garden designer L. Krüger as a landscape park (18 ha) and a game preserve and pheasantry (200 ha) were established in the remaining part. In 1945 , the chateau was confiscated on the basis of the so-called Beneš Decrees.
The current chateau exposition is an example of the living of the nobility in the second half of the 19th century in the original historical furnishings (representative rooms, the suite of the Count and Countess, a picture gallery, guest rooms , the chateau chapel).
The state chateau Hrádek u Nechanic was declared a National Cultural Monument in 2001 .
The chateau is managed by the National Heritage Institute, a contributory organization established by the Ministry of Culture of the Czech Republic.
