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Sylvania in Lucas County, Ohio — The American Midwest (Great Lakes)
 

World's Longest Swimming Pool
⎯⎯⎯
Thomas Devilbiss

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Worlds Largest Swimming Pool Marker image. Click for full size.
Photographed by Craig Doda, December 6, 2024
1. Worlds Largest Swimming Pool Marker
Inscription.
World's Largest Swimming Pool. In 1924, Camp Miakonda's famous giant swimming pool was dug out. It was graded off to be 2 feet to 10 feet deep. It originally had a diving tower, two piers and five diving boards. In 1925 an additional area was added 40' by 60' in size and it had a fine white sand bottom. The new area's depth was between 3-4 feet deep and was for teaching non-swimmers. A walk and pier were constructed on both sides of the swimming pool area in 1925. Its perimeter was not cemented in until some time later. The pool was called "Lake Libbey" in the late 1920s. It was Toledo glass industrialist Edward Libbey who funded the further development of the pool and many other things at Miakonda when he left a bequest of $25,000.00 in 1926 after his death. Touted as the "World's Longest" the pool eventually became 480' long and held 1.3 million gallons of water. The filtration plant, which cleaned 100,000 gallons of water each hour, and other pool improvements were completed in 1941 with funds provided by a bequest from John A. Geismar. The pool had a gravel bottom and was spring fed so that the water was always ice cold. There were three defined areas of the pool of different depths. The shallow end was for non-swimmers, the middle area for beginners and the deep end, was for fully qualified swimmers. Water quality problems
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and physical deterioration eventually ended the giant pool in the late 1970's.

Thomas Devilbiss. The official name of Camp Miakonda is DeVilbiss Scout Reservation and it was incorporated as such in 1926. When Camp Miakonda was in its early years it was Thomas DeVilbiss who was persuaded to provide a donation toward its development by some of his friends who were supporters of Scouting. He donated $30,000 in 1924 which was an immense gift at the time. Those funds paid for a number of things at the camp and paid off the mortgage from a 1922 land purchase. The camp was named for Mr. DeVilbiss right after his gift was made. He was the council president in 1928 when he died suddenly. At his death in 1928 he left another $25,000 for Miakonda. Thomas DeVilbiss's father, Allen, was a nose and throat medical doctor who invented the atomizer which allows a liquid to be into a spray. He created it so that medicine could be sprayed into a patient's throat. He started the DeVilbiss Company in 1888 in Toledo. His son. and Thomas' brother, Allen Jr., invented a springless automatic scale and started a company himself in 1897 that later became the Toledo Scale Company. Thomas developed the paint spray gun as well as perfumizers. Mr. DeVilbiss's spray gun technology was revolutionary as far as coating and painting application in industry. It was and is used throughout American
Worlds Largest Swimming Pool / Thomas Devilbiss Marker image. Click for full size.
Photographed by Craig Doda, December 6, 2024
2. Worlds Largest Swimming Pool / Thomas Devilbiss Marker
industry. Mr. DeVilbiss received the first Silver Beaver awarded in our council in 1932, although it was presented posthumously.
 
Topics. This historical marker is listed in these topic lists: Industry & CommerceParks & Recreational AreasScience & MedicineSports. A significant historical year for this entry is 1924.
 
Location. 41° 41.674′ N, 83° 40.629′ W. Marker is in Sylvania, Ohio, in Lucas County. It can be reached from West Sylvania Avenue 0.3 miles east of North Holland-Sylvania Road, on the right when traveling west. Touch for map. Marker is at or near this postal address: 5600 W Sylvania Avenue, Toledo OH 43623, United States of America. Touch for directions.

Regionally, this marker is on the Lake Erie Shore and in the Toledo Metropolitan Area. It is also in the American Midwest, on the Great Lakes, and in the Corn Belt. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once the Viceroyalty of New France, the Haudenosaunee (Iroquois) Confederacy, the territory of the Mississippian Culture, and the Northwest Territory.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Miakonda's Treehouse Campsite / Lou Klewer, Toledo Scouting Legend (within shouting distance of this marker); Miakonda's Crows Nest Flagpole / John St. Clair Mendenhall (about 300 feet away, measured in a direct line); America's Oldest Boy Scout Camp Building / Order of The Arrow Lodge 522 (about 300 feet away); The Nature Museum / Paul E. Reinbolt (about 400 feet away); Stream and Habitat Restoration at Camp Miakonda (about 400 feet away); Ford Dining Hall / John Claerhout Toledo Boy Scout (about 500 feet away); Lake Sawyer / Sea Scout Ship A.B. Newell
Worlds Largest Swimming Pool / Thomas Devilbiss Marker image. Click for full size.
Photographed by Craig Doda, December 6, 2024
3. Worlds Largest Swimming Pool / Thomas Devilbiss Marker
(about 500 feet away); The Council Lodge / Miakonda's Visionary (about 500 feet away). Touch for a list and map of all markers in Sylvania.
 
Worlds Largest Swimming Pool / Thomas Devilbiss Marker image. Click for full size.
Photographed by Craig Doda, December 6, 2024
4. Worlds Largest Swimming Pool / Thomas Devilbiss Marker
Worlds Largest Swimming Pool back wall remnants image. Click for full size.
Photographed by Craig Doda, December 6, 2024
5. Worlds Largest Swimming Pool back wall remnants
 
 
Credits. This page was last revised on July 17, 2025. It was originally submitted on December 7, 2024, by Craig Doda of Napoleon, Ohio. This page has been viewed 797 times since then and 170 times this year. Photos:   1, 2, 3, 4, 5. submitted on December 7, 2024, by Craig Doda of Napoleon, Ohio. • Andrew Ruppenstein was the editor who published this page.
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Jun. 26, 2026