Olomouc’s Holy Trinity Column: 25 Years on the UNESCO List
In the heart of Olomouc stands the monumental Baroque Holy Trinity Column, a 32-meter landmark consecrated in 1754 in the presence of Empress Maria Theresa. Listed as a UNESCO World Heritage Site since 2000 for its exceptional authenticity, it is now undergoing extensive restoration set to finish by Christmas 2026. The work has revealed two surprises: an underground chamber beneath the chapel and a time capsule hidden in the topmost sculpture.
The Holy Trinity Column was built over several decades as an expression of deep religious faith and as a symbol of pride for the city of Olomouc. Its consecration in 1754 was a major event attended in person by Empress Maria Theresa. The monument is unique in that its appearance has remained virtually unchanged since its creation – it has preserved a high degree of authenticity, which is one of the main reasons for its UNESCO inscription.
Underground cavity and time capsule
The Baroque masterpiece is currently under restoration. During the repairs, two mysteries were revealed. Beneath the chapel lies an underground space whose purpose had long been unknown. Archaeologists discovered that it is a technical chamber designed to compensate for the height difference between the square and the chapel floor.
The second mystery was a metal container hidden inside the sculpture at the top of the monument. It contained documents from the last major restoration at the turn of the millennium – such as flood maps, newspapers of the time, and coins. The current city leadership plans to add new materials, including a commemorative euro banknote issued for this year’s anniversary and messages from elementary school pupils, so that the monument becomes a bridge between generations.
If no unexpected complications arise, Olomouc will receive a fully restored monument as its Christmas gift in 2026.
