Baku's most consequential export is neither a carpet nor a bottle of wine — it's oil, and the industry built around it shaped the physical city you walk through today in ways that are visible if you know where to look.
Why Baku specifically
The Absheron Peninsula, where Baku sits, has exceptionally rich underground oil and gas reserves, a geological fact that also produces the naturally burning gas seeps at Yanar Dag and the historic Ateshgah fire temple. This same resource base made Baku one of the world's earliest major centres of industrial oil extraction, well before oil became a globally dominant commodity elsewhere.
The historic boom and what it built
In the late 19th and early 20th centuries, Baku experienced a major oil boom that drew international capital and prominent industrial families into large-scale extraction and refining around the city. This wealth funded the ring of elaborate mansions and public buildings that now sits just outside Icherisheher's old walls — the second of the three layers described in VoyageWindow's guide to reading Baku's layout — built in a mix of European architectural styles by newly wealthy oil industrialists and their companies. This district is the most immediately visible physical legacy of the historic boom, and walking through it tells a more concrete story about the era's wealth than any single museum exhibit could.
The modern industry
Azerbaijan's oil and gas sector remains a major part of the national economy today, centred on the state oil company SOCAR (State Oil Company of the Republic of Azerbaijan), formed in 1992 when, according to SOCAR's own history of the company, "all production units, enterprises and scientific research organizations of the oil and gas industry" were merged by presidential decree into a single state structure, alongside international partnerships developing Caspian offshore fields. This is a continuation of the same underlying resource base as the historic boom, not a separate later discovery, though the scale, technology and international partnership structures involved have changed substantially since the early 20th century. The modern industry's revenue is also connected to the third layer of Baku's architecture — the contemporary waterfront towers described in the "three cities" guide — funded in significant part by continued oil and gas income rather than the earlier oil-boom fortunes.
Where the industry is actually visible to a visitor
Realistically, most of what a visitor can see connected to Baku's oil industry is historical and architectural rather than operational: the oil-boom mansion district around Icherisheher, some heritage buildings connected to the early industry, and Absheron Peninsula sites like Yanar Dag and Ateshgah that share the same geological origin. This guide has not been able to confirm whether any currently operating oil or gas facility near Baku offers public tours, and given the industrial and often restricted nature of active extraction sites, it's reasonable to assume most operational areas are not generally open to casual visitors without a specific arranged and confirmed booking.
Putting the pieces together
Baku's oil story connects three things a visitor can actually see: the naturally burning ground at Yanar Dag and Ateshgah that first marked the resource beneath the peninsula, the ornate mansion district built directly from the wealth of the historic boom, and the modern waterfront towers funded in part by the industry's continued revenue today. Seeing them as one continuous story, rather than three unrelated sights, is what makes Baku's layout make sense as more than just an architectural curiosity.
The Villa Petrolea and other individual heritage sites
Some individual heritage sites and buildings connected to specific early oil companies and families from the boom era exist within or near Baku, occasionally preserved as small museums or heritage buildings tied to a particular historical company. This guide has not been able to confirm which specific sites currently operate as public museums, their hours, or entry requirements, so treat any specific site name you encounter elsewhere as needing direct confirmation before you plan a visit around it.
Reading the industry's scale in context
Azerbaijan's early oil production made it, for a period around the turn of the 20th century, one of the largest oil-producing regions in the world relative to global output at the time, which is part of why the wealth generated was substantial enough to fund an entire architecturally distinct district of Baku. This historical scale is worth keeping in mind as context for why the mansion district looks the way it does — it wasn't built on modest regional wealth, but on a genuinely globally significant industrial position for its era.
International involvement in the historic boom
The late 19th and early 20th-century boom drew significant international capital and expertise, including well-known European industrial families investing directly in Baku's oil fields and refining operations. This international dimension is part of why the mansion district's architecture reads as broadly European rather than distinctly local or Russian in style — the wealth was Baku's, but much of the architectural taste and technical expertise behind both the extraction and the buildings it funded came from a genuinely international set of investors and engineers drawn to the city specifically because of its oil.
Before you plan around this theme
If Baku's oil history interests you specifically, pair a walk through the mansion district with a half-day trip to Yanar Dag and Ateshgah on the Absheron Peninsula, since the two experiences reinforce each other more than either does alone. This guide does not cover current SOCAR corporate visitor programmes or specific offshore field development details.