"World's largest sundial" set to be created in Houston

Berlin-based architect Riccardo Mariano has designed an arch topped in photovoltaics, which will act as a sundial for Houston, Texas, as a part of the city's ongoing expansion of the Bayou Greenways.
Named the Arco del Tiempo (Arch of Time), the public artwork in the city's Second Ward will be covered in photovoltaic modules to generate nearly 400,000 kilowatt-hours of electricity annually and provide shade for locals.
Riccardo Mariano has designed the "world's largest sundial" for Houston