We are passionate about crafting immersive 3D, VR, and MR experiences that are accurate, educational and effective. We participate in site-based research so that we can incorporate important cultural, historical and social elements from these sites into the development process. We rely on evidence-based instructional design theories and models to help shape the structure and content of the immersive experience. Our digital toolbox includes virtual reality headsets (Oculus Rift and HTC Vive) 3D computer graphics software (Blender and Autodesk 3ds Max), raster graphics editors (Adobe Photoshop and GIMP), vector graphics editors (Adobe Illustrator and Inkscape), game engine platforms (Unity), VR 360 video cameras (Ricoh Theta S and GoPro Omni), audio editing software (Audacity), and video editing software (Camtasia). Tools we may add in the future include photogrammetry, laser scanning and aerial photography. Hoping to benefit the greatest amount of people, we distribute all code, models and instructional materials as open educational resources.