Julian Barratt (Self - Narrator), Xisco Llabrés (Self - Architect, Sagrada Familia), José Pedro Pulido (Self - Maintenance Director, Setas de Sevilla), Pedro Parilla Calle (Self - Managing Director, Setas de Sevilla), Maria Paz Pérez (Self - Conservationist, Consorcio Ciudad Monumental Mérida), Stefan Friedl (Self - Hotel Manager, Marqués De Riscal), Josele Bernabé (Self - Owner, Cleanfly), Luis Vidal (Self - Founder, Luis Vidal + Architects), Joan Sentelle (Self - Director of Operations, Espai Barca), Javier Selvas Arsuaga (Self - Site Director, Adif)