Sacyr's Blog

The Stone of El Peñol is one of the largest rocks on the planet. It can be climbed using the so-called "stairway to heaven" that runs up one side. We look at how this extraordinary natural phenomenon was formed and how it has become an iconic tourist attraction in Colombia.

Machu Picchu has withstood powerful earthquakes for centuries. This is partly due to a masonry technique used by the Incas, which consisted of cutting the stones and fitting them together without mortar. The result is one of the most fascinating archaeological sites on the planet.

Moon soil is called regolith and is currently undergoing test-outs to make materials such as concrete, metals, ceramics, and composites.

A Latvian startup called Brette Haus has designed multiple houses that can be moved up to 100 times. We look at the potential of these portable dwellings, which can theoretically be assembled in just three hours.

More than 70% of the Earth’s surface is covered by water, according to the US Geological Survey. While theoretical concepts of underwater cities have been put forward to take advantage of this enormous space, to date no such large-scale city has been built.