Contact Citadel Garden
Contact Citadel Garden
Contact Citadel Garden
Contact Citadel Garden
Whether you're interested in investing, partnering, or simply learning more, we’d love to hear from you.
The Citadel Garden Team
The Citadel Garden Team
CEO
Rahim Taghizadegan
Rahim Taghizadegan is a visionary entrepreneur and educator with a strong focus on innovative, Bitcoin-native locations.He has built scholarium, the holding company of citadel.garden, over two decades of leadership.
He is the last Austrian Economist in the direct tradition from Austria, and is unique in bridging its interdisciplinarity and practical realism. His leadership spans academic institutions, Bitcoin infrastructure, and finance.
Marketing
Nikolaj Astrup Madsen
Nikolaj Madsen is a Danish entrepreneur and marketing strategist with a strong focus on community, alternative living, and family-centric experiences. He previously founded Refuga, a retreat platform that brought together over 500 entrepreneurs on curated global adventures. Most recently, he created Traveling Village, a project where 20 families live and travel together for four months, blending freedom, education, and shared experience. With a deep interest in the future of family life, Nikolaj works to reimagine how privacy and community can coexist-shaping environments that support autonomy without isolation.
Design
Rudolf T. A. Greger
Rudolf T. A. Greger is a seasoned design philosopher and practitioner with over 30 years of experience dedicated to enhancing quality of life through thoughtful environments. He co-founded GPdesignpartners in 1992 and later the Design-Thinking-Tank (2014), both advancing innovation in human-centered design. As a coach and speaker, he specializes in design-thinking methodologies-ideal for envisioning family-oriented places that balance functionality, well-being, social connection, and aesthetics. His deep focus on improving people's daily lives equips him to lead the creation of high-quality, family-friendly environments.
Construction and Local Coordinator for Istria
Davor Djacic
Davor Djacic brings over three decades of leadership experience in international trade, construction, and tourism development. With a degree in business from the Vienna University of Economics and Business, he has led large-scale infrastructure projects-including World Bank-financed thermal power plant upgrades-and developed major commercial and hospitality properties in Croatia. His track record includes hotel, restaurant, and mobile home projects, along with yacht charter ventures, making him ideally suited to lead integrated construction and tourism initiatives.
Family Well-being and Local Coordinator for Madeira
Sylvia Brinded-Püls
Sylvia Brinded-Pls is a German-Peruvian mother of two with a background in fitness, economics and education. For the past 7 years, she has been a stay-at-home mom and has been continuously helping her children to learn life's ropes without attending a traditional school setting.
CEO
Rahim Taghizadegan
Rahim Taghizadegan is a visionary entrepreneur and educator with a strong focus on innovative, Bitcoin-native locations.He has built scholarium, the holding company of citadel.garden, over two decades of leadership.
He is the last Austrian Economist in the direct tradition from Austria, and is unique in bridging its interdisciplinarity and practical realism. His leadership spans academic institutions, Bitcoin infrastructure, and finance.
Marketing
Nikolaj Astrup Madsen
Nikolaj Madsen is a Danish entrepreneur and marketing strategist with a strong focus on community, alternative living, and family-centric experiences. He previously founded Refuga, a retreat platform that brought together over 500 entrepreneurs on curated global adventures. Most recently, he created Traveling Village, a project where 20 families live and travel together for four months, blending freedom, education, and shared experience. With a deep interest in the future of family life, Nikolaj works to reimagine how privacy and community can coexist-shaping environments that support autonomy without isolation.
Design
Rudolf T. A. Greger
Rudolf T. A. Greger is a seasoned design philosopher and practitioner with over 30 years of experience dedicated to enhancing quality of life through thoughtful environments. He co-founded GPdesignpartners in 1992 and later the Design-Thinking-Tank (2014), both advancing innovation in human-centered design. As a coach and speaker, he specializes in design-thinking methodologies-ideal for envisioning family-oriented places that balance functionality, well-being, social connection, and aesthetics. His deep focus on improving people's daily lives equips him to lead the creation of high-quality, family-friendly environments.
Construction and Local Coordinator for Istria
Davor Djacic
Davor Djacic brings over three decades of leadership experience in international trade, construction, and tourism development. With a degree in business from the Vienna University of Economics and Business, he has led large-scale infrastructure projects-including World Bank-financed thermal power plant upgrades-and developed major commercial and hospitality properties in Croatia. His track record includes hotel, restaurant, and mobile home projects, along with yacht charter ventures, making him ideally suited to lead integrated construction and tourism initiatives.
Family Well-being and Local Coordinator for Madeira
Sylvia Brinded-Püls
Sylvia Brinded-Pls is a German-Peruvian mother of two with a background in fitness, economics and education. For the past 7 years, she has been a stay-at-home mom and has been continuously helping her children to learn life's ropes without attending a traditional school setting.
CEO
Rahim Taghizadegan
Rahim Taghizadegan is a visionary entrepreneur and educator with a strong focus on innovative, Bitcoin-native locations.He has built scholarium, the holding company of citadel.garden, over two decades of leadership.
He is the last Austrian Economist in the direct tradition from Austria, and is unique in bridging its interdisciplinarity and practical realism. His leadership spans academic institutions, Bitcoin infrastructure, and finance.
Marketing
Nikolaj Astrup Madsen
Nikolaj Madsen is a Danish entrepreneur and marketing strategist with a strong focus on community, alternative living, and family-centric experiences. He previously founded Refuga, a retreat platform that brought together over 500 entrepreneurs on curated global adventures. Most recently, he created Traveling Village, a project where 20 families live and travel together for four months, blending freedom, education, and shared experience. With a deep interest in the future of family life, Nikolaj works to reimagine how privacy and community can coexist-shaping environments that support autonomy without isolation.
Design
Rudolf T. A. Greger
Rudolf T. A. Greger is a seasoned design philosopher and practitioner with over 30 years of experience dedicated to enhancing quality of life through thoughtful environments. He co-founded GPdesignpartners in 1992 and later the Design-Thinking-Tank (2014), both advancing innovation in human-centered design. As a coach and speaker, he specializes in design-thinking methodologies-ideal for envisioning family-oriented places that balance functionality, well-being, social connection, and aesthetics. His deep focus on improving people's daily lives equips him to lead the creation of high-quality, family-friendly environments.
Construction and Local Coordinator for Istria
Davor Djacic
Davor Djacic brings over three decades of leadership experience in international trade, construction, and tourism development. With a degree in business from the Vienna University of Economics and Business, he has led large-scale infrastructure projects-including World Bank-financed thermal power plant upgrades-and developed major commercial and hospitality properties in Croatia. His track record includes hotel, restaurant, and mobile home projects, along with yacht charter ventures, making him ideally suited to lead integrated construction and tourism initiatives.
Family Well-being and Local Coordinator for Madeira
Sylvia Brinded-Püls
Sylvia Brinded-Pls is a German-Peruvian mother of two with a background in fitness, economics and education. For the past 7 years, she has been a stay-at-home mom and has been continuously helping her children to learn life's ropes without attending a traditional school setting.
CEO
Rahim Taghizadegan
Rahim Taghizadegan is a visionary entrepreneur and educator with a strong focus on innovative, Bitcoin-native locations.He has built scholarium, the holding company of citadel.garden, over two decades of leadership.
He is the last Austrian Economist in the direct tradition from Austria, and is unique in bridging its interdisciplinarity and practical realism. His leadership spans academic institutions, Bitcoin infrastructure, and finance.
Marketing
Nikolaj Astrup Madsen
Nikolaj Madsen is a Danish entrepreneur and marketing strategist with a strong focus on community, alternative living, and family-centric experiences. He previously founded Refuga, a retreat platform that brought together over 500 entrepreneurs on curated global adventures. Most recently, he created Traveling Village, a project where 20 families live and travel together for four months, blending freedom, education, and shared experience. With a deep interest in the future of family life, Nikolaj works to reimagine how privacy and community can coexist-shaping environments that support autonomy without isolation.
Design
Rudolf T. A. Greger
Rudolf T. A. Greger is a seasoned design philosopher and practitioner with over 30 years of experience dedicated to enhancing quality of life through thoughtful environments. He co-founded GPdesignpartners in 1992 and later the Design-Thinking-Tank (2014), both advancing innovation in human-centered design. As a coach and speaker, he specializes in design-thinking methodologies-ideal for envisioning family-oriented places that balance functionality, well-being, social connection, and aesthetics. His deep focus on improving people's daily lives equips him to lead the creation of high-quality, family-friendly environments.
Construction and Local Coordinator for Istria
Davor Djacic
Davor Djacic brings over three decades of leadership experience in international trade, construction, and tourism development. With a degree in business from the Vienna University of Economics and Business, he has led large-scale infrastructure projects-including World Bank-financed thermal power plant upgrades-and developed major commercial and hospitality properties in Croatia. His track record includes hotel, restaurant, and mobile home projects, along with yacht charter ventures, making him ideally suited to lead integrated construction and tourism initiatives.
Family Well-being and Local Coordinator for Madeira
Sylvia Brinded-Püls
Sylvia Brinded-Pls is a German-Peruvian mother of two with a background in fitness, economics and education. For the past 7 years, she has been a stay-at-home mom and has been continuously helping her children to learn life's ropes without attending a traditional school setting.