Join us for the Most Endangered Places 2026 unveiling!
Attend the Most Endangered Places 2026 unveiling in Oklahoma City to learn which historic properties need urgent help. This two-hour presentation pairs concise condition reports with practical ways you can support preservation locally.
More ways to explore the area's outdoor wonders
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Difficulty
easy
Duration
2 hours
Fitness Level
No special fitness required; accessible for most adults and older teens
Wildlife
History
Oklahoma City’s built environment reflects rapid 19th- and 20th-century growth tied to rail and oil development, creating diverse historic neighborhoods.
Conservation
Preservation relies on local advocacy, sustainable reuse, and funding partnerships; attending events and volunteering are direct ways to reduce loss of historic fabric.
Preservation Oklahoma, Inc.
Join us for the Most Endangered Places 2026 unveiling!
Preservation Oklahoma, Inc. is an Oklahoma City-based organization focused on preserving and interpreting local architectural heritage. The organization stewards the Henry Overholser Mansion, Oklahoma City's first mansion, built in 1903, and offers public programs that open the property to residents and visitors. Preservation Oklahoma presents guided experiences that highlight the mansion's original architectural details, historical context, and the role of the Overholser family in the city's early development.
Public offerings include the Overholser Mansion Tour, which leads guests through formally preserved rooms and shares documented history of the house and its construction in 1903. For visitors seeking a different perspective, the History & Haunts program explores reported paranormal lore alongside documented historical events associated with the property. Both experiences are designed to balance historical interpretation with visitor engagement, using informed explanation and onsite artifacts to anchor each narrative.
Preservation Oklahoma partners with local stakeholders to maintain the mansion and to schedule tours and special events at the property in Oklahoma City. The organization provides scheduled public tours and occasional themed events that allow community members and visitors to experience a preserved piece of local heritage. Ticketing, schedules, and event information are published by Preservation Oklahoma through its official channels and local event listings. Visitors are encouraged to check availability before planning a visit to confirm dates and any special requirements and policies.
Location
Oklahoma City
Based in central Oklahoma
Historic Site
Overholser Mansion (1903)
City’s first mansion preserved
Tours Offered
2
Guided daytime and evening programs
Featured Program
History & Haunts
Themed evening experience
Secure tickets for guided daytime tours or the History & Haunts evening experience — limited-capacity programs that showcase Oklahoma City's preserved heritage.
Arrive early for seating
Events can fill fast; arrive 10–15 minutes early to get a seat and network with local preservationists.
Bring a notebook
Organizers share contact info and follow-up actions — jot down names and next steps for volunteer opportunities.
Hydrate and plan transit
Downtown parking can be limited; use rideshare or public transit if possible and drink water, especially in summer.
Follow up with organizations
If a site piques your interest, ask organizers how to donate time or money—most campaigns welcome out-of-town allies.
Notebook and pen
Useful for jotting contact details, condition notes, and volunteer tasks mentioned during the talk.
Phone or camera
Capture slides, maps, and contact details for later reference and research.
Reusable water bottle
Keeps you hydrated during arrival and informal outdoor conversations after the presentation.
summer
Comfortable shoes
Good for short walks around nearby historic blocks if organizers offer on-site visits.