Image of a ruined classical greek building atop a hill

Photo by Black Iris Visuals on Unsplash

Image of a low-poly 3D-print of a representation of Rodin's “The Thinker”

Photo by Vinicius "amnx" Amano on Unsplash

Oil painting of a Victorian woman lost in thought

"A Day Dream" by Edward John Poynter (1863)

Scientific illustration of a flea

Robert Hooke's drawing of a flea from “Micrographia” (1665)

Image of the vaulted ceiling at Westminster Abbey

Photo by Oliver Fuß on Unsplash

Photo of a collection of shovels inside a display cabinet

Part of the shovel collection at Stonehill College • Photo by Casey Bisson (CC BY-NC-SA 2.0)

Image of diffused dark gray lines on a light gray background

Photo by Julian Wirth on Unsplash

Image of Los Alamos from above

Los Alamos, New Mexico • Photo by Daniel Schwen (CC BY-SA 3.0)

Painting of conquistadors pillaging the Inca

“Pizarro Seizing the Inca of Peru” by John Everett Millais (1846)

Image of a statue of Throeau in front a replica of his Walden cabin

A statue of Thoreau at Walden Pond • Photo by Chris Devers (CC BY-NC-ND 2.0)