Most people admire Tulsa’s skyline from the street.

Far fewer realize that another part of downtown exists beneath their feet.

Hidden below some of the city’s most iconic Art Deco buildings is a network of underground corridors connecting historic office towers, banks, and hotels. Over the years, these tunnels have inspired stories about bootleggers, secret speakeasies, and hidden escape routes.

While those legends make for entertaining conversation, the real story is even more interesting.

Whether you’re new to Tulsa or you’ve lived here for years, exploring the underground tunnel system is one of the city’s most unique experiences.

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Why Were Tulsa’s Underground Tunnels Built?

Unlike many urban legends suggest, Tulsa’s tunnels weren’t built for secret nightlife or Prohibition-era smuggling.

Their purpose was surprisingly practical.

During the 1920s, Tulsa was booming. Oil companies, banks, attorneys, and investors filled downtown as the city became known as the Oil Capital of the World.

The underground corridors allowed professionals to move between buildings without facing Oklahoma’s summer heat, winter winds, or severe spring storms. They also made it easier to transport documents, money, and freight between connected buildings.

For one of America’s fastest-growing cities, the tunnels simply made good business sense.

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Waite Phillips’ Private Tunnel

Perhaps the most famous section of the underground system belonged to legendary oilman Waite Phillips, whose generosity would later give Tulsa Philbrook Museum of Art.

During the 1920s and 1930s, kidnapping wealthy business leaders for ransom was a genuine concern across the country.

To improve security, Phillips commissioned a private underground tunnel connecting his two signature downtown buildings:

• Philtower
• Philcade

The enclosed passage allowed him to move discreetly between the buildings without stepping onto busy downtown streets.

It’s a fascinating reminder of just how extraordinary Tulsa’s oil boom years really were.

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More Than Just Underground Hallways

One of the things that makes these tours so memorable is that they aren’t limited to the tunnels themselves.

Visitors also experience some of downtown’s most beautiful historic buildings, many of which are architectural masterpieces in their own right.

Depending on the tour, you’ll likely visit landmarks such as:

• 320 South Boston Building
• Atlas Life Building
• Mid-Continent Tower
• Kennedy Building
• Historic bank lobbies
• Beautiful marble corridors
• Original vaults
• Ornate Art Deco details

I’ve always enjoyed discovering how many incredible spaces are tucked away behind ordinary office doors downtown. Unless you have business inside these buildings, you’d probably never know they’re there.

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Why You Can’t Visit on Your Own

One of the most common questions people ask is why they can’t simply wander through the tunnels whenever they want.

The answer is simple.

These aren’t abandoned attractions.

They’re active passageways inside privately owned office buildings that continue to serve businesses today.

Because of that, public access is carefully managed, making guided tours the only way to legally experience much of the underground system.

That exclusivity is part of what makes visiting the tunnels feel so special.

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Two Ways to Explore Tulsa’s Underground

Many people assume there’s only one tunnel tour available.

In reality, there are two excellent ways to experience Tulsa’s underground corridors.

Tulsa Foundation for Architecture Tunnel Tours

If you’re looking for the city’s signature tunnel experience, the Tulsa Foundation for Architecture (TFA) hosts large public tours twice each year.

These tours focus heavily on Tulsa’s architectural history, preservation efforts, and the stories behind downtown’s remarkable buildings.

The next public tunnel tour is scheduled for:

Saturday, August 8, 2026

Visitors are guided through approximately seven historic buildings while learning about Tulsa’s oil boom, Art Deco architecture, and the hidden passages connecting them.

Tickets have become incredibly popular and often sell out shortly after they’re released.

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Tulsa Tours

If you can’t make the August event, you don’t have to wait another six months.

Tulsa Tours offers guided tunnel tours throughout the year, typically several weekdays each week during normal business hours.

Because the tunnels pass through active office buildings, weekday scheduling allows visitors to access spaces while the buildings are open.

These tours are generally smaller than the TFA events, making them a great option for visitors who prefer a more intimate experience or need greater flexibility in scheduling.

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Which Tour Should You Choose?

Honestly, you can’t go wrong with either one.

If you enjoy community events and learning about architecture alongside a larger group, the Tulsa Foundation for Architecture tour is an excellent choice.

If your schedule is more flexible or you’d rather explore with a smaller group, Tulsa Tours offers opportunities throughout much of the year.

Either way, you’ll experience a side of downtown Tulsa that most people never get to see.

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A Perfect Escape From Oklahoma Weather

There’s another reason I recommend adding the tunnel tour to your Tulsa bucket list.

Most of the experience takes place indoors.

That makes it a fantastic activity during August’s heat, winter’s chilly winds, or one of those rainy Oklahoma afternoons when outdoor plans suddenly change.

You’ll still walk between a few buildings, but much of the experience happens inside beautifully preserved historic lobbies and the underground corridors themselves.

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A Different Way to Appreciate Downtown Tulsa

One of the things I’ve noticed about downtown Tulsa is how well the city has preserved so many of its historic buildings.

Former banks and oil company headquarters have found new life as offices, restaurants, apartments, hotels, and event spaces while maintaining the architectural details that make them special.

Walking through the tunnels isn’t just a history lesson.

It’s also a reminder that great buildings can continue serving a city for generations when they’re thoughtfully preserved.

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Planning Your Visit

Whether you choose one of the Tulsa Foundation for Architecture’s signature public tours or book a weekday experience with Tulsa Tours, you’ll discover a side of downtown that many lifelong Tulsans have never seen.

If the August TFA tour fits your schedule, I’d recommend purchasing tickets early because they have a reputation for selling out quickly.

If not, the regularly scheduled tours offered by Tulsa Tours make it easy to experience Tulsa’s hidden underground throughout much of the year.

However you choose to explore, don’t forget to look up once in a while. Some of Tulsa’s most beautiful architecture is just as impressive above ground as it is below.

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Visitor Information

Tulsa Foundation for Architecture

• Large public tunnel tours held twice each year
• Strong emphasis on architecture and preservation
• Great for first-time visitors and architecture enthusiasts

Tulsa Tours

Great if you’re looking for more scheduling flexibility

Small guided tours offered throughout the year

Weekday tours during business hours