Laughing Escalator

Ride the escalator down from the exhibit-hall level at the Colorado Convention Center and you'll start hearing laughter bubbling up through the cracks between the steps — a different voice every eight feet. It's a hidden 4-channel sound piece artist Jim Green slipped in back in 2004, a 'call and response' volley of giggles bouncing between speakers under your feet. There's no plaque, no fanfare; people either don't notice or assume they're imagining it. Green passed in 2024, but his sneaky little joke keeps running.

The move: Time a visit when the Convention Center is open and quiet, ride the escalator down, and see whose face cracks first as the laughter creeps up through the steps.

• 📍 Downtown Denver (Colorado Convention Center)
• 💸 Free
• ⚡ Low-key
• 🌗 Indoors

Where: Colorado Convention Center, 700 14th St, Denver, CO 80202 (escalator from the exhibit-hall level; no signage)

Hours: Accessible only when the Convention Center is open to the public (varies by event schedule); no posted hours, free.

Plan a visit & invite your people →

Proof: source 1 · source 2 · source 3

Verified 2026-06-07.