St. Spas Church Under Bulbank in Sofia, Bulgaria

St. Spas Church Under Bulbank is not a functioning church with a street entrance but a preserved archaeological site beneath the UniCredit Bulbank building near Sveta Nedelya Square in central Sofia. The surviving remains belong to the medieval and later Orthodox church of the Ascension, commonly known as Sveti Spas, together with part of Serdica’s fortification complex. This makes the site historically important but practically unusual. Visitors should not expect a normal museum visit or worship service: there is no reliably published public timetable for entering the basement archaeological level, and the most realistic experience is to understand the remains in the context of the modern building and the larger Serdica-Sredets archaeological zone.

The Regional History Museum Sofia lists the church and an adjoining section of the fortress wall among the archaeological properties it manages. That official status matters because the remains are not merely decorative fragments incorporated into an office block. They belong to the protected historical core of Serdica-Sredets, where Roman, medieval, Ottoman and modern layers repeatedly overlap. The church is one of the clearest examples of how central Sofia’s later construction had to accommodate substantial archaeology beneath contemporary streets and buildings.

Dating the church requires care because different sources describe several phases. A 2025 historical article from the Sofia Metropolis preserves archival information stating that a church stood here in the medieval period and that later rebuilding altered its form repeatedly. The surviving archaeological church is usually associated with a medieval foundation, while documentary evidence also records a much larger nineteenth-century successor. After Liberation, an older structure was judged inadequate and a new, larger church was built and consecrated in the 1880s. That later building combined a basilican form with three domes and became a visible part of the neighbourhood before the Second World War.

The site suffered a decisive rupture during the bombing of Sofia in 1944. The nineteenth-century church was destroyed, leaving the older archaeological levels and fragments to be studied and preserved. Archival testimony cited by the Sofia Metropolis notes earlier wall paintings, including sixteenth-century material, while heritage descriptions point to multiple layers of decoration over time. The result is not one intact medieval church frozen at a single date, but a site that records repeated rebuilding and changing religious life across centuries.

The physical remains also sit beside evidence of ancient Serdica. Historical descriptions of the archaeological level under the bank mention the continuation of the Roman fortification wall, a well-preserved round tower and internal circulation space by the defensive line. The church itself was built above part of this older fabric. That vertical relationship is exactly what makes the location valuable: a visitor looking at modern central Sofia is effectively standing above several cities at once. The remains of Sveti Spas are therefore best understood alongside the Largo and other exposed sections of ancient Serdica rather than as an isolated church ruin.

Access is the difficult part. The remains are inside the basement of a functioning bank building, and current official museum pages do not publish regular visitor hours for this particular archaeological property. UniCredit Bulbank itself still acknowledged the church remains in a 2025 cultural article about an exhibition in its Sofia space, confirming that the archaeology remains in the building. Older visitor accounts and heritage descriptions indicate that parts can be viewed through glazing, but that should not be converted into a promise of unrestricted entry. Anyone travelling specifically to see the archaeological level should contact the Regional History Museum Sofia or the building operator before making plans.

The location is nevertheless easy to reach. The site is at the edge of Sveta Nedelya Square, close to Serdika metro station and the pedestrian heart of the city. It fits naturally into a walking route that includes the Ancient Serdica Archaeological Complex, St Petka of the Saddlers, the Rotunda of St George and the Central Market Hall area. Because the archaeological remains themselves may take only a short time to view, the strongest itinerary treats them as one chapter in a broader exploration of Sofia’s layered centre.

There is no verified admission price or dedicated visitor schedule for St. Spas as of this research check. Do not rely on generic opening hours for UniCredit Bulbank, because office or banking hours do not establish access to the archaeological level. The same caution applies to accessibility. A basement location inside a modern commercial building may have lifts or controlled access, but no source used here confirms a public step-free route to the remains. Travellers who need guaranteed access should ask in advance.

St. Spas is rewarding precisely because it challenges the usual idea of a historic sight. Its importance lies less in a complete surviving building than in the evidence of continuity and disruption: medieval worship, later rebuilding, nineteenth-century expansion, wartime destruction and modern preservation beneath a bank. Visitors who approach it expecting a polished museum may be disappointed by uncertain access. Those interested in urban archaeology, however, will find the site a powerful example of how Sofia’s historical layers survive inside the infrastructure of the present city.