Zámek Třebušín stands as a testament to architectural evolution and historical significance in the village of Třebušín, located within the Ústecký kraj region. Originally constructed as a Renaissance manor in the late 16th century, it transformed into its current baroque form around 1710. This monument is notable for its architectural beauty, rich history, and cultural importance, having served various roles over time including a school and hotel. Since 1964, Zámek Třebušín has been protected as a cultural monument.

The origins of Zámek Třebušín trace back to the late medieval period, with archaeological evidence suggesting an early manorial presence at the site by the turn of the 12th and 13th centuries. The first documented mention relates to Bleh z Třebušína in 1169, indicating a longstanding noble association. However, the original structure likely succumbed during the tumultuous Hussite Wars. In the late 16th century, Oldřich or Tristan Hostakovský commissioned the construction of a Renaissance manor on this site. By 1600, Jaroslav Osterský Kaplíř ze Sulevic resided there, and following his lineage, Smil Kaplíř ze Sulevic inherited it. The estate faced confiscation in 1623 due to involvement in the Bohemian Revolt, leading to Pavel Vencelius z Bochova acquiring it shortly thereafter.

The architectural journey of Zámek Třebušín is marked by its transformation from a Renaissance manor to a baroque edifice. The current form resulted from significant reconstruction around 1710, likely under the guidance of architect Octavio Broggio. This period saw the addition of cross vaults with ribs and decorative stucco work by Tommaso Soldati in the older northern wing. A chapel once graced its premises, adding to its historical allure. In 1860, an eastern wing was added, though it lacks notable architectural value compared to the rest of the structure.

Ownership of Zámek Třebušín has seen dramatic changes over the centuries. After Pavel Vencelius z Bochova's acquisition, his daughter married František Karla Kressl z Kvaltenberka, who was elevated to nobility in 1693. The estate saw further elevation when František Karel Kressl, a notable figure associated with early Czech nationalism, became its owner and was elevated to the noble class in 1760. Following his lineage, ownership passed to František Karel z Puteani, whose wife Antonie added an eastern wing posthumously for her husband. The estate changed hands again in 1906 when Josef Haneschka purchased it, followed by Otto J. J. Männel in 1913.

Throughout its history, Zámek Třebušín has been the backdrop to significant events and curiosities. Notably, František Karel Kressl expanded the estate's holdings to include the Kalich hill with ruins of a castle founded by Jan Žižka. The zámek itself transitioned from a noble residence to educational and hospitality roles in the 20th century, reflecting its adaptability and enduring relevance.

Today, Zámek Třebušín stands as a cultural monument open to visitors who wish to explore its historical layers and architectural beauty. Its preservation allows for an appreciation of both its Renaissance origins and baroque transformations. The zámek's journey through time—from noble residence to educational institution and hotel—underscores its significance in the region's history. Visitors are invited to delve into this rich tapestry of history, architecture, and culture that Zámek Třebušín so elegantly embodies.