Watch This When You're High - The Sun Tunnels

Shout out to @bumcubble for this suggestion.

Sun Tunnels (1973–1976), by American artist Nancy Holt, consist of four 18-foot-long concrete cylinders arranged in an open x-shaped configuration in Utah’s Great Basin Desert. Large holes bored into each cylinder depict the constellations Draco, Perseus, Columba, and Capricorn. In Holt’s own words, the Sun Tunnels are an earthwork that “bring the vast space of the desert back to human scale. 

Keep the suggestions coming. Keep them classy. No butt stuff.