For many Britons, the Festival's logo, by Abram Games (featuring Britannia adorned with red, white and blue bunting), also became evocative of the period.
All these elements become evocative vehicles for recounting the birth of a revolutionary idea as the exhibition explores the early questions, the fascinating discoveries, the premonitions of an idea and its initial uncertainties, the fears, the long silence, and finally, the publication of his theory in 1859.
The trees become evocative, strange and mysterious, while remaining suggestive of and suggested by the natural world.
John Seely Brown, an organizational guru who was the director of the Xerox PARC research center for a decade, told me, "Those chance encounters that become evocative turn out to be incredibly important.
They become "figures evocative of lost worlds, conjuring the ghosts of children who have left these toys behind".
With the abstraction of the impressionists, Matisse and Picasso, shape and colour became more evocative of the poetic currents that lay beneath photographic realism.
It might become something more evocative of the device's purpose.
In fact Rocko's Modern Life has become hauntingly evocative for an era of TV that lampooned our media-soaked world.
The city sits within the West's cultural heritage, and one reason why its endangerment has become so evocative is the particularly visual character of this connection.
Beginning with a '0' that is splintered into geometric 3D sections as if it were a NASA architectural blueprint, the numbers slowly become more corporeal and evocative of typographical styles from the 70s and 80s by the time '8' and '9' roll around.
