Earth Hour

At Caleido, we believe that innovation and leisure must coexist with respect for the environment. For this reason, we are renewing our collaboration with WWF by reducing our light footprint for sixty minutes. This blackout is an invitation to collective reflection that brings together millions of people in more than 190 countries to take action against climate change.

Sustainable architecture for people

Our commitment to energy efficiency is part of Caleido’s DNA. We were designed under the principles of “blue architecture” and hold the LEED Gold certification, which validates our low environmental impact. Joining Earth Hour is an extension of this commitment, aiming to raise awareness among our brands, employees, and visitors about the importance of reducing energy consumption.

Twenty years of an unstoppable global movement

Earth Hour celebrates its twentieth edition as the world’s largest symbol of climate ambition. Caleido joins more than 300 municipalities and 75 companies in Spain that demonstrate how unity across society is key to accelerating the ecological transition. As a benchmark of innovation in Madrid, sustainability is our strategic priority.

More information:

Date: Saturday, March 28, 2026.

Switch-off time: From 8:30 p.m. to 9:30 p.m.

Location: The entire Caleido complex (Paseo de la Castellana 259 E).

Parking: Please note that parking is free throughout the weekend (access via the Cuatro Torres tunnel).