20 mi from Warsaw, Age of Steam Roundhouse leads the list

Pro Football Hall of Fame: Erik Drost, CC BY 2.0 · Ohio Stadium: Lectrician2, CC BY-SA 4.0 · Ohio State Reformatory: Niagara66, CC BY-SA 4.0 · Cuyahoga Valley National Park: Unknown, Public domain · Historic Crew Stadium: Rick Dikeman, CC BY-SA 3.0 · ScottsMiracle-Gro Field: Nova Crystallis, CC BY-SA 4.0 · Value City Arena: Nick81aku at English Wikipedia, Public domain · Tom Benson Hall of Fame Stadium: Harrier233 at English Wikipedia, Public domain · McKinley National Memorial: CoolRockC, CC BY-SA 4.0 · Age of Steam Roundhouse: Alvintrusty, CC BY-SA 4.0 · Malabar Farm State Park: Jerward at en.wikipedia, Public domain · The Wilds: Bikingshaun (talk), CC BY 3.0 · Ohio Governor's Mansion: Bwsmith84 (talk), CC BY 3.0 · Alligator Effigy Mound: Rev. Stephen D. Peet, editor, Public domain · Columbus Museum of Art: The original uploader was Indrian at English Wikipedia., CC BY-SA 3.0 · Wexner Center for the Arts: Ibagli, Public domain · Franklin Park Conservatory: Analogue Kid at en.wikipedia, CC BY 2.5 · Ohio Theatre: The original uploader was Analogue Kid at English Wikipedia., CC BY 2.5 · William McKinley Presidential Library and Museum: Tim Evanson from Cleveland Heights, Ohio, USA, CC BY-SA 2.0 · Billy Ireland Cartoon Library & Museum: Maria Rimmel, CC BY-SA 4.0 · First Ladies National Historic Site: The original uploader was Kralizec! at English Wikipedia., Attribution · Fort Laurens: Roseohioresident, Public domain · Akron Art Museum: Sleepydre (a.k.a Threeblur0 at en.wikipedia), Public domain · Flint Ridge State Memorial: Nyttend, Public domain · Jesse Owens Memorial Stadium: Dan Keck from Ohio, CC0 · MAPS Air Museum: Jedischultz, CC BY-SA 4.0 · Ohio History Center: Sebastian Wallroth, CC BY 4.0 · National Veterans Memorial and Museum: Antony-22, CC BY-SA 4.0 · Amish & Mennonite Heritage Center: photoswelike, CC BY-SA 2.0 · Dawes Arboretum: Annmarie Creamer, Public domain · Kingwood Center: Mar07 at en.wikipedia, Public domain · Ohio Railway Museum: George Campbell from Worthington, OH, USA, CC BY 2.0 · Goodale Park: Jsjessee, CC BY-SA 2.0 · Northern Ohio Railway Museum: Motormansteve, CC BY-SA 3.0 · Ohio Village: Ryan Lintelman, CC BY-SA 2.5 · Pizzuti Collection: Ɱ, CC BY-SA 4.0 · BibleWalk: JBTHEMILKER, CC BY-SA 4.0 · Cultural Arts Center: Another Believer, CC BY-SA 4.0 · Inniswood Botanical Garden and Nature Preserve: Игоревич, Public domain · John and Annie Glenn Museum: Akflyer, CC BY-SA 4.0 · Kelton House Museum and Garden: Ɱ, CC BY-SA 4.0 · Mansfield Memorial Museum: Publichall, CC BY-SA 3.0 · Akron Fossils & Science Center: Ian Juby, Public domain · Chadwick Arboretum: The original uploader was Analogue Kid at English Wikipedia., CC BY 2.5 · Genoa Park: Another Believer, CC BY-SA 4.0 · Mansfield Art Center: User:OHWiki, Public domain · Pythian Temple and James Pythian Theater: Wdzinc, CC BY-SA 3.0 · Richard Ross Museum of Art: Christopher L. Riley, CC BY-SA 4.0 · Great Western Schoolhouse: Bwsmith84 (talk), CC BY 3.0 · Terradise Nature Center: Tim Kiser, CC BY-SA 4.0