Foamhenge

[1][2] Foamhenge was created in 2004 by Mark Cline of Enchanted Castle Studios as an April Fool's Day stunt to generate tourism.

Later the same year, Cline made an agreement with The Natural Bridge for rent-free land with the intention of attracting tourists to both sites.

By 2015, the foam pieces had deteriorated markedly due to the temporary nature of their construction and overexposure to the elements in a moderate climate.

[7] With guidance from Harold Geller, the Observatory Director at nearby George Mason University, the pieces were accurately placed to align with the Summer solstice just like Stonehenge.

[2] Foamhenge was created as a whimsical, temporary, roadside attraction and architectural folly, but its popularity sustained its legitimacy and permanence.