Get inspired!

17,725 architecture projects

Learn from past Buildner architecture competition participants through our extensive project library, curated over more than 15 years!

Sand-Cast Concrete Observatory with Spiral Staircase Overlooking Diverse Landscapes

Authors:
Fred Leung, Kan Tong
Sand-Cast Concrete Observatory with Spiral Staircase Overlooking Diverse Landscapes
Explore the full project presentation!
Subscribers only
The sand-cast concrete observatory, defined by a spiral staircase and elevated views of North Vidzeme's varied landscapes, serves as a hub for exploration and community gathering.
5 key facts about this project
01
The observatory stands 31.7 meters tall, offering expansive views of the surrounding landscape.
02
A spiral staircase provides unique vertical circulation and direct access to gathering spaces.
03
Sand-cast concrete construction reinforces the tactile connection between the building and its environment.
04
The design emphasizes fluid integration with the existing terrain and ecological context.
05
A peripheral veranda enhances the transition between public and private areas for social interactions.

Set in the diverse landscapes of North Vidzeme, Latvia, the design integrates a trail and an observatory, inviting exploration and interaction with nature. The main idea focuses on a journey through different environments, allowing visitors to connect with the land and enjoy their surroundings. The project encourages sensory experiences as people walk through the various ecological zones.

The Trail

The trail is a central feature that leads individuals through contrasting ground textures and ecosystems, including farmland, forests, plains, and swamps. As visitors meander along the pathway, they experience a sense of adventure and discovery. Each step offers a new view and a different feel of the land, enhancing engagement with the natural world.

Kurgi Observatory

The observatory functions as both a lookout point and a space for curiosity. It rises to 31.7 meters, designed to enhance the visitor experience with its dynamic circulation and varied floor textures. The height of the structure provides expansive views of the surrounding terrain. As visitors ascend, the upper levels offer a compressed panorama, creating a unique relationship between the built environment and the wide-open landscape.

Gathering Spaces

In addition to the observatory, gathering spaces play a vital role in encouraging social interaction. One such space is a gathering hut, accessed by a spiral staircase. This area is covered and offers comfort for groups to meet. The adjacent peripheral veranda serves as a transition zone, balancing public engagement with the need for quiet moments of reflection.

Materiality and Structure

Materials used in the design include sand-cast prefabricated concrete for the floors and ceilings, ensuring strength and a connection to the natural environment. The lightweight skeletal structure allows the observatory to blend into the landscape. The ceiling features suspended sand-mixed plaster that highlights natural shapes, reinforcing the bond between architecture and its setting.

Overall, the careful arrangement of space, structure, and nature creates an environment that fosters a deeper appreciation of the surroundings, allowing for meaningful experiences and connections as people explore the landscape.

Noticed a mistake?
Highlight the text and click on
Noticed a mistake

Mujassam Watan Urban Sculpture Challenge #8

Mujassam Watan Urban Sculpture Challenge #8

Design iconic urban sculptures for the prestigious Mujassam Watan competition and compete for 50,000 €

50,000 € PRIZE project COMPETITION
Prize 50,000 + Potential realisation
Eligibility Open to all
Final registration deadline 23 July 2026

Open architecture competitions

  • Closest deadline first
  • Project competitions first
    Selected winning projects have the potential to be constructed
  • Ideas competitions
    Experimental competitions with the focus on pushing the boundaries of creativity
new
Portugal Long Table 
Restaurant

Design a slow-living restaurant in Portugal

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 8 July 2026
new
The Quiet 
Tower

Design an observation tower in Latvia

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 22 July 2026
Mujassam Watan 
Urban Sculpture Challenge #8

Design iconic urban sculptures for the prestigious Mujassam Watan competition and compete for 50,000 €

50,000 € PRIZE project COMPETITION
Prize 50,000 + Potential realisation
Eligibility Open to all
Final registration deadline 23 July 2026
new
New York High Falls 
Riverfront Market

Design a New Riverfront Market in Rochester, New York

ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 29 July 2026
new
Valli Wine 
Tasting Room

Design a wine tasting room in Italy

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 30 July 2026
Pavilion Atlas 2026

Design a story of your country

ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Final registration deadline 16 September 2026

Recurring architecture competitions

Museum of 
Emotions

Use architecture to create different emotional states

Edition #8 ideas COMPETITION SILENT CONTEST For this competition, NO DESCRIPTION TEXT is allowed. The architecture ideas must be communicated strictly with visuals.
Prize Monetary award
Eligibility Open to all
Final registration deadline 18 June 2026
new
Kinderspace

Design a kindergarten of tomorrow

Architecture for Children’s Development #4 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 18 June 2026
Re:Form - 
New Life 
for Old Spaces

Choose a site—used, abandoned, or forgotten—anywhere in the world, and give it a new purpose

Edition #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 2 July 2026
Buildner's Unbuilt Award 2026

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2026 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Advance registration deadline 9 July 2026
Underbridge #2

Design housing in underutilized bridge spaces

Affordable Housing Edition #20 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 16 July 2026
MICROHOME 2026

Design a new concept of small-scale home and share a prize fund of 100,000€

100,000 € Prize Fund / Kingpsan Edition #11 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 September 2026

Media, partners and clients

To view this project in detail,
please log in with your
Architects’ Network Plus account.
Subscription instantly unlocks all the architecture projects plus other member-only benefits:
  • Access the 17,725 Concept Library
  • Professional tools including file transfer, email, portfolio management, and more
Register now
Already a member? Log in

This website uses cookies to improve user experience and gather usage statistics.

More information is available in our Privacy & Cookie policy