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Festival Guide · updated 2026-08-31
Photo: Ele boz, CC BY-SA 3.0, via Wikimedia Commons
In 1958, a low-budget sci-fi picture called The Blob filmed its most famous scene inside Phoenixville's Colonial Theatre: a packed house of moviegoers bursting through the doors onto Bridge Street to escape a creeping, man-eating goo. The shot lasts seconds. Phoenixville has been re-enacting it for a quarter century.
The Colonial opened in 1903 and, like most single-screen movie houses, spent the back half of the century sliding toward demolition. A nonprofit bought and restored it in the late 1990s, and rather than downplay the building's B-movie past, they leaned all the way in. The first Blobfest ran in 2000. The 2026 edition was the 27th. It now fills the theatre and shuts down several blocks of downtown for a full weekend every July.
Most of The Blob was made within a few miles of where the festival happens. Production was based at Valley Forge Studios, with location work scattered across Chester Springs, Downingtown, Royersford and Phoenixville itself — Doc Hallen's house and garage were local, and the diner the Blob engulfs was the Downingtown Diner, which stood at 81 West Lancaster Avenue about twelve miles southwest of town.
The Colonial got into the film almost by accident. The crew needed somewhere to screen their dailies, the theatre had the projectors, and the building talked its way into the movie's signature sequence.
Blobfest opens not with a screening but with a procession of people carrying fire extinguishers down Bridge Street to the theatre doors — where, on cue, they let them off all at once in a white cloud that organizers cheerfully describe as the town's version of daytime fireworks.
It is a straight-faced tribute to the plot. In the film nothing stops the creature until the characters discover it recoils from cold, and the town empties its supply of CO₂ extinguishers — pooled from the fire department and the local high school — to freeze the thing solid. The parade was dreamed up by artist Andee Miskiewicz, who also designed the Blob plaque that hangs inside the Colonial.
It is free, it happens in the street, and it is the single most photographed thing at the festival after the Run-Out. If you are only coming for an hour, come for this.
The centerpiece is the Run-Out, a live re-creation of the 1958 escape: several hundred costumed people screaming their way out of the Colonial's doors while thousands watch from Bridge Street. Participants are inside for a pre-show first, so the ticket buys you the whole experience rather than ten seconds of sprinting.
Only about 350 Run-Out tickets exist, and in recent years they have sold out within minutes of going on sale.
Each year runs under a theme — 2026 was Cirque du Blobfest, a carnival treatment complete with a ringmaster-led pre-show; 2025 was Camp Blobfest; 2023 was Blobs and Monsters. The bones of the weekend stay the same.
Blobfest lands on the second weekend of July. The next one is July 9–11, 2027, at the Colonial Theatre on Bridge Street. The theme and lineup are usually announced in the spring, with Run-Out tickets going on sale around the same time.
Watch the LocalSpot events calendar — every Blobfest event appears there as soon as the Colonial announces it.
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