The Church of the Assumption of the Virgin Mary, also known as Havířský kostel, is a Roman Catholic church in Poděbrady, Czech Republic. This historical monument stands outside the town center on the Elbe River's left bank. It marks where ten leaders of the Kutná Hora miners' uprising were executed in August 1496.

Originally built as a wooden structure in 1516, it has undergone several transformations over the centuries, reflecting its resilience and historical significance. The church's origins are linked to Bohemia's turbulent early 16th-century history, marked by religious tensions leading up to the Protestant Reformation. In 1496, ten leaders of the Kutná Hora miners' uprising were executed there, highlighting struggles for miners' rights against oppressive feudal practices under Habsburg rule.

Initially constructed as a wooden church on this execution site at Prague citizen Ondřej Prachovec's behest, it was destroyed by Swedish forces in 1634 during the Thirty Years' War. Between 1665 and 1666, a brick baroque church replaced the original structure, later enhanced with pseudogothic renovations in the late 19th century.

Architecturally, Havířský kostel began as a wooden edifice before transforming into a brick building adorned with baroque features. The late 19th-century renovations introduced pseudogothic elements, including a decorative portal featuring a relief of the Assumption of the Virgin Mary and stained glass windows by artist Adolf Liebscher.

Ownership and administration have changed significantly over time. Initially maintained by two hermits until its secularization under Joseph II in 1784, it was later restored as a chapel. From 1921 to 1937, the Czechoslovak Church used the building before transferring it to Poděbrady's city in 1964. Today, the church's inventory is preserved by the Polabské muzeum, and while it remains open to the public only occasionally, its historical significance makes it noteworthy.

The area surrounding Havířský kostel adds to its historical allure. A belfry from around 1516 stands nearby, rebuilt after a fire in 1921. Additionally, a stone well serves as a remnant of former iron baths, and an inundation bridge leads to Jordán Pond, once part of a larger lake. The church's proximity to the Obora estate, originally established by Emperor Ferdinand I Habsburg, further enriches its historical context.

Today, Havířský kostel stands as a testament to the region's complex history, from miners' uprisings to architectural transformations. Its significance lies not only in its religious function but also in its role as a witness to pivotal historical events and cultural shifts. Visitors are invited to explore this monument, appreciating its unique blend of architectural styles and its place within Czech history.