The Thunderhawk roller coaster is 100 years old this summer.
The park in South Whitehall Twp., near Allentown, threw a birthday party over the weekend, and the state added a proclamation celebrating the historic attraction.
Park employees also created a pop-up history museum to chronicle the coaster's past.
Originally named simply The Coaster, Thunderhawk was built back in 1924 as an out-and-back roller coaster, featuring a drop and return.
It has been renamed and reconfigured over the years, but is still enjoyed by park-goers.
This isn't the only big roller coaster-related news from Dorney Park this year.
The park's first new roller coaster in 19 years, Iron Menace, opened earlier this season.
Action News' Alyana Gomez mics up while riding Dorney Park's new Iron Menace roller coaster