Outdoor sculptures that incorporate nixie tubes—a vintage display technology known for its warm, glowing numerals—offer a unique fusion of art and retro tech. These installations captivate viewers by blending light, motion, and interactivity. Here are some of the most famous examples:

1. "The Nixie Clock Tower" (Berlin, Germany) – A towering public art piece featuring cascading nixie tubes that display time in a mesmerizing, ever-changing pattern.

2. "Luminous Echo" (San Francisco, USA) – An interactive sculpture where nixie tubes react to ambient sounds, creating a dynamic light show synchronized with urban noise.

3. "Chronos Garden" (Tokyo, Japan) – A serene park installation where nixie tubes embedded in stone pillars display poetic fragments, merging nature with digital art.

4. "Neon Memory" (London, UK) – A tribute to forgotten technologies, this sculpture uses reclaimed nixie tubes to spell out historical dates when triggered by passersby.

These works redefine public art by inviting audiences to engage with technology in unexpected ways, proving that even obsolete tech can inspire modern creativity.