1) Mars Desert Research Series, Vincent Fournier, 2013
2) Longleat Maze, by Niki Odolphie via Wikimedia Commons
3) Bubble Chamber Particle Collisions, Fermilab.

Ventures Section:
1) Background Image from RawPixel (https://www.rawpixel.com/free-images)
2) Walkthrough Icon - Created by Takao Umehara (nounproject)
3) Plug-In Icon - Created by Gregor Cresnar (noun project)
4) Hands-on Icon - Created by Piotrek Chuchla (noun project)