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Discover Sofia's history and science on this 4-hour evening walking tour, including exclusive access to the Old Observatory and views through historic telescopes.


The tour kicks off promptly at 17:30 at the front of Saint Nedelya Church, a central landmark easily recognizable in Sofia. This location serves as the ideal starting point for uncovering the city’s layered past. The guide introduces the history of the church’s reconstruction after the 1925 bombing, Bulgaria’s deadliest terrorist attack that claimed many high-ranking officials and civilians. This event marks a pivotal moment in Sofia’s modern history and sets the tone for the narrative that follows.
From this point, the tour quickly moves into Sofia’s archaeological core, where layers of Roman, medieval, and modern civilizations are visible beneath the city streets. The guide highlights the Rotunda of Saint George, Sofia’s oldest surviving building from the 4th century, which is beautifully tucked away within the city’s contemporary architecture. This stop offers a tangible connection to the city’s ancient roots, providing context for the subsequent visits.
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A key part of the walk involves the Triangle of Power, a cluster of Presidential and governmental buildings constructed directly over the Roman ruins of Serdica. The guide explains how this area symbolizes the city’s continuous history, from Roman times to the present day. This contrast between ancient foundations and modern political centers is striking and offers insight into Sofia’s layered development.
Passing the National Assembly building and the impressive Sofia University, the narrative shifts to Bulgaria’s intellectual rebirth. The university, established in 1888, embodies the nation’s focus on education and science following its liberation in the late 19th century. The guide emphasizes how this period marked Bulgaria’s efforts to rebuild and modernize through knowledge and innovation.

Leaving the bustling city center, the tour moves into Boris Garden, Sofia’s oldest and largest park. Known as “The Lungs of Sofia,” this green space, designed in the 1880s, offers a peaceful setting to reflect on the city’s urban planning. The park combines recreational areas with pathways that connect historical and cultural points of interest, making it an ideal place for a relaxed stroll.
The guide points out how Boris Garden embodies Sofia’s approach to integrating recreation, leisure, and learning within urban spaces. The calm atmosphere allows for a moment of pause before the tour’s scientific highlight: the University Astronomical Observatory.

The tour’s climax is the visit to the University Astronomical Observatory, established between 1892 and 1894. Recognized as one of the oldest astronomical institutions in the Balkans, this site reveals Bulgaria’s early dedication to astronomy and scientific progress. The guide leads visitors through the historic complex, showcasing original instruments still housed within the domed observatory.
A major highlight is the chance to observe through original telescopes, such as the 15.2cm Grubb Refractor. If the evening sky is clear, visitors get the rare opportunity to look upward and witness the beauty of space through these historic devices. The visit not only highlights Bulgaria’s scientific achievements but also provides a tangible connection to the cosmos.
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This 4-hour tour is designed for those interested in both history and science. The guides, conducted in English, are well-rated at 4.7 stars, offering informative commentary and engaging storytelling. The tour is suitable for visitors comfortable with walking, as it covers several sites and includes a visit to Boris Garden.
Participants should meet at Saint Nedelya Church and are advised to wear comfortable shoes. The tour includes an exclusive guided visit to the Old Observatory, where the atmosphere is both educational and inspiring. The opportunity to look through historical telescopes makes this experience stand out among Sofia’s city tours.
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What makes this tour particularly special is its combination of archaeology, modern history, and scientific exploration. It links Sofia’s ancient foundations with its 20th-century struggles, culminating in a scientific achievement that continues to inspire. This approach provides a comprehensive picture of Bulgaria’s cultural and intellectual identity.
The visit to the Old Observatory is an extraordinary addition, offering the rare chance to connect with Bulgaria’s astronomical heritage. Viewing through original telescopes like the Grubb Refractor makes the experience memorable and educational. This aspect is especially appealing to those interested in science history and cosmology.

The tour starts at 17:30 at Saint Nedelya Church, making it an ideal choice for an early evening activity. It lasts around 4 hours, providing a relaxed pace to explore Sofia’s key historical and scientific sites. The group is led by a live, professional guide in English who provides detailed narratives.
While the specific physical requirements aren’t detailed, the tour involves walking through urban streets, parks, and a historic observatory, so comfortable shoes are recommended. The tour’s structure makes it suitable for most visitors with a moderate level of mobility.

This experience suits history enthusiasts, science lovers, and urban explorers eager to discover Sofia’s layered past. It offers a rich narrative that ties together ancient ruins, modern political buildings, and scientific legacy. The visit to the Old Observatory is particularly appealing for those with a fascination for astronomy or historical instruments.
The tour’s focus on early 20th-century history and Bulgaria’s scientific heritage makes it a compelling choice for travelers interested in cultural identity and technological progress. It’s an educational journey that combines outdoor exploration with indoor visits, all within a manageable four-hour window.

This tour presents a thoughtful blend of archaeology, history, and science, making it a well-rounded introduction to Sofia. The exclusive access to the Old Observatory and the chance to view through historic telescopes are standout features that elevate the experience. The guide’s storytelling and the structured route through key sites ensure a meaningful exploration.
While the tour involves walking and some site transitions, the pacing remains manageable, and the themes explored are engaging for a broad audience. It’s particularly suited for those who want a cultural and intellectual perspective on Sofia, beyond typical city sights.
This experience offers value for those interested in Bulgaria’s scientific milestones and appreciates a mix of urban strolls and scientific discovery. The tour provides a memorable evening that links the city’s ancient roots with its modern scientific pursuits.
Is this tour suitable for children or families?
While the tour is generally suitable for most visitors, children should be comfortable walking and engaging with history and science topics. The visit to the observatory and viewing through historic telescopes can captivate those with interest in astronomy.
What should I wear for the tour?
Comfortable shoes are recommended since the experience involves walking through city streets, parks, and the observatory. The tour is held in the evening, so consider bringing a light jacket or sweater.
Can I cancel or reschedule this tour?
Yes, free cancellation is available up to 24 hours in advance. You can also reserve now and pay later to keep your plans flexible.
Is the tour conducted in other languages?
This tour is offered in English with a live guide, making it accessible to international visitors.