“I thought nothing could be more cool to show that Mars is a real world orbiting the Sun, just like the Earth, than to have a sundial marking the passage of time there,” said Nye.

In addition to its use as a sundial and solar power plant, the Arco del Tiempo will host events such as musical performances too. "Tracing the path of the sun across the sky, Arco del Tiempo is ...

At night, the sundial glows, with cut-outs of stars, moon, and planets. Underneath the rock garden lies a time capsule that is to be opened on the city’s 100th birthday in 2051.