St. Hyacinth's Church, Warsaw
church building in Warsaw, Poland

St. Hyacinth's Church (Polish: Kościół św. Jacka), named after Saint Hyacinth of Poland, is a Baroque Catholic church building located in Warsaw's New Town at Freta Street 8/10.
History
St. Hyacinth's Church was founded by the Dominican Order and adjoins Warsaw's largest monastery. The church is largely early Baroque in appearance, but also comprises Renaissance and Gothic Revival elements in the apse (arches, vaults). Its construction began in 1603 and it was completed in 1639.
During the construction and shortly afterwards the church was encompassed with ornate chapels. In 1627 Jadwiga Mińska established the Holy Cross Chapel, the so-called Dark Chapel, and in 1651 the Royal Musicians founded the Chapel of Our Lady of the Snows.
When Warsaw was captured by Swedish and Brandenburgian forces in 1655, the church shared the same fate as other buildings in the city.
The public source identifies “St. Hyacinth's Church, Warsaw” as church building in Warsaw, Poland. This brief keeps that definition visible, then builds a research path around Hyacinth's, Church and Warsaw.
Why this record matters
A short description can identify a subject without explaining its stakes. For “St. Hyacinth's Church, Warsaw”, the useful work is to connect “church building in Warsaw, Poland” to the records capable of establishing context and consequence.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated May 17, 2026. The linked authority identifier is Q3699191. Authority coordinates are 52.251, 21.009. 2 of 3 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1603, 1639, 1627 and 1651.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
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Three-step research path
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Questions for further research
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This entry incorporates text from “St. Hyacinth's Church, Warsaw” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.