Kennywood installed its first dark ride, the float-through Old Mill way back in 1901, a year before the park even erected its first coaster (Fred Ingersoll's "Three-Way, Figure-Eight Toboggan," added in 1902). During its more than 90 years of operation, the Old Mill underwent a number of name and design changes, variously called the "Fairyland Floats" and "Hardheaded Harold's Horrendously Humorous Haunted Hideaway," but it currently operates with its original name and still offers a languorous, six-minute trip past several illuminated scenes and through a number of completely dark stretches (though it was never dubbed a "Tunnel of Love," it might as well have been, wink, wink...).
THE OLD MILL!! of course! thanks!!!