National Roller Coaster Day 2025 — created to mark the day in 1898 when Edwin Prescott patented the first vertical loop roller coaster, according to nationaldaycalendar.com — is Saturday, Aug. 16.

What would become Geauga Lake Park started in 1887 as a train stop with a picnic grove. The park added its first roller coaster, The Big Dipper, in 1925 and later had Ohio's first looping roller ...