[4][5] Its figure-eight design was common on side friction roller coasters constructed in the early 1900s, reaching peak popularity in the Roaring Twenties.[6][8] Prior to its restoration by P. Joseph Lehman, Inc., Consulting Engineers, the roller coaster was added to the list of National Register of Historic Places in 1993.[13] Although the ride is quite tame by modern standards with a height of 41 feet (12 m) and speed of 10 mph (16 km/h), it remains a popular attraction due to its historical significance.This design became obsolete after World War I when side friction was supplanted by under-track mechanisms, which offered better vehicle security and support for greater speeds.[14] Very few side friction roller coasters survived into the 1980s, and Leap-the-Dips at Lakemont Park is believed to be the last remaining figure-eight model of its kind still in operation.