The "Pyramid of the Moon" at Teotihuacán, the site of an ancient city near modern-day Mexico City, is aligned with the sun on the summer and winter solstices, a research team in Mexico says ...

But a word to the wise: its sister structure, the Pyramid of the Sun, remains closed to climbers until further notice. Attempting to scale it without permission could land you a fine of up to ...

Teotihuacán’s Moon Pyramid Reopens After A Five Year Closure. Only the first tier is open, but 47 ancient steps are enough to feel the power of the gods. The Sun Pyramid remains closed.