Digital Orthophoto Quads
In 1976/1977, the USGS completed an aerial photograph survey of the six main islands (Hawaii, Oahu, Maui, Molokai, Lanai, Kauai) of Hawaii. The aerial photographs were orthorectified and grouped into 127 orthophoto quadrangles. Someone (I’m not sure who) scanned the original paper maps at 400 dpi, and MrSID [...]
Edujoser has a website dedicated to European castles, and has created a collection of placemarks showing the locations of 100s of castles in Italy. According to Edujoser, the collection includes all medieval military constructions (castles, towers, ruins…) built before XVI Century (inclusive) or more recent ones with defensive features (forts, citadels…). Newer chateaux-palaces [...]
Apollonius at the Google Earth BBS has compiled a list of over 300 places related to ancient Greece. This list spans the Minoan and Mycenaean periods up to the end of the Hellenistic age.
Most of the places have ruins or other features that are visible in Google Earth.
The Megalithic Portal website has created a collection showing the locations of over 15,000 prehistoric and other ancient sites in Google Earth.
The collection is organized by categories, such as ancient caves, temples, and burial chambers. More information about these locations can be found a their website.
The goal of the Rosetta Project is to document current and historic languages throughout the world. They have created a set of files for Google Earth that showcase some of their efforts. This file contains the following information.
Endangered Languages – Shows the locations of numerous endangered languages is Africa and the Americas. West [...]
This is a collection of locations and other geographical data related to the Bible. Includes the following:
Bible locations organized by Book (from www.openbible.info) Bible locations organized by Chapter (from www.openbible.info) Map Overlays – About 15 historic map overlays of Jerusalem (from www.openbible.info) Bodies of Water – The locations of bodies of water mentioned [...]
The National Register of Historic Places has identified and documented approximately 80,000 districts, sites, buildings, structures, and objects that are significant in American history, architecture, archeology, engineering, and culture. The Register is maintained by the US National Park Service (NPS).
The NPS has created a Google Earth version of the database, which you [...]
Various high resolution historic aerial photograph overlays for various cities. I will continue to add additional locations as I have time.
The collection currently includes the following:
Los Angeles 1948 (Aerials from USGS)
New York City 1954 (Aerials from USGS)
Oakland, California 1948 (Aerials from USGS)
Chicago, 1938 (Aerials from Illinois Natural Resources [...]