Bright red tubes crisscross Vienna streets, inviting public interaction and urban playfulness.

Playful Red Tubes Transform Vienna’s Streets with Interactive Urban Design

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Written by Seth Sebastian

2026-07-21

The first thing you notice is the red. A bold, corrugated red hose winds through the Hirschstetten neighborhood of Vienna, seemingly liberated from a construction site. It coils on the ground and arches overhead, weaving through wooden towers, connecting people in unexpected ways. This vibrant element is central to The Outsiders, an urban installation by the collective Moradavaga for ROOMING INN’s Living Lab, showcasing surprising design ingenuity.

Function Meets Form in Wooden Towers

Constructed from pale pine, these objects are not only visually intriguing but also offer a tactile experience. The structures, resembling a cross between flatpack furniture and scaffolding, feature ladders and open frames inviting exploration. Standing tall, they are robust and inviting rather than delicate — their red-rimmed pneumatic wheels emphasize utility and invite interaction.

Designer: Moradavaga for Rooming Inn

Close-up of red tube entrance flanked by pedestrians on a busy street.

Interactive Acoustic Communication

The ingenuity lies in the circular cutouts piercing these wooden forms. Each structure is equipped with two or three pronounced black-rimmed circles at varying heights, crafted to hold the ends of the red tubing. These openings transform into acoustic portals, enabling communication without the need for gadgets. Simply speak into the tube, and your voice travels to a listener on the opposite end. It’s a hands-on, screen-free interaction.

Children playing inside large red tube structure in city square.

Industrial Materials, Playful Use

Curved red tube intersects with urban park landscape and trees.

The choice of standard drainage pipe for the red hose is strategic. Moradavaga chose an industrial yet familiar material, transforming it into a playful, flexible tool. When extended across a space, it encourages dynamic movement, guiding participants to rethink spatial interaction.

Young couple standing inside vibrant red tube under cloudy sky.

Flexible Installations for Dynamic Environments

Pedestrians walking alongside a series of elevated red tubes.

Each unit varies in size and layout. A lower structure with upward-angled speaking cones differs in function from a towering counterpart with ladders. Together, they form a dynamic, temporary landscape, yet each piece maintains a distinct presence when isolated. Their modular design embodies a constant state of transition, presenting endless configuration opportunities.

Red tube winding through city plaza as people interact around it.

Mobility and adaptability are designed from the ground up. The red wheels imply these creations are not static but meant to roam. Originally part of the ROOMING INN Living Lab in a former kindergarten, they now move throughout Hirschstetten, appearing at various public engagements. This mobility subtly challenges the static nature of traditional urban infrastructure.

View of interconnected red tubes with people visible inside.

For more playful design transforming urban spaces, explore colorful kindergarten transformation in Kunshan, which combines vibrant design with urban strategy.

Long red tube stretching over a city street filled with traffic.

An Element of Surprise in Everyday Spaces

People gathered around red tube installation in central Vienna.

Moradavaga intends to infuse daily life with a touch of surprise, prompting viewers to reinterpret their surroundings. The Outsiders accomplishes this through its form and playful aesthetic — the vivid tube, wooden frames, and anthropomorphic features create characters that feel dynamic and alive. This tension between object and environment exemplifies captivating, thought-provoking design.

Discover another fascinating urban artwork with natural street art transformations by Fábio Gomes Trindade that uses vibrant elements to change urban narratives.

Bold red structure curling over a walkway with pedestrians nearby.
Children climbing through a large red tube positioned in a square.
Network of red tubes frames view of historical buildings and skyline.
Red tubes arching over busy street with cyclists and cars passing.
Red tube pattern creating a striking visual contrast with urban backdrop.
Group of people interacting with the red tube structure in public space.

Source: yankodesign.com

Frequently asked questions

What is The Outsiders urban installation?

The Outsiders is an urban installation by the collective Moradavaga for ROOMING INN’s Living Lab. It features a bold, corrugated red hose and wooden towers, creating an interactive and playful urban experience in the Hirschstetten neighborhood of Vienna.

How does the red tubing encourage interaction?

The red tubing acts as acoustic portals, allowing people to communicate by speaking into one end, with their voice traveling to a listener on the opposite end. This screen-free interaction encourages hands-on communication and exploration.

How do the wooden structures enhance the installation?

Constructed from pale pine, the wooden structures are visually intriguing and tactile. They feature ladders and open frames, inviting exploration and dynamic interaction with the environment.