Pruned's post touts the merits of TerraServer, a site that I also prefer for aerial imagery and shows views of Robert Smithson's Spiral Jetty and Michael Heizer's Double Negative (beautifully manipulated images, by the way).

But, the post at Pruned inspired me to seek and share more sources for aerial landscape images.

Satellite Imagery Resources:

• Google Sight Seeing
  Satellite images of "the best tourist spots in the world" using Google Maps.

• EarthSearch
  Geographic and Geospatial Information.

• Monumental Land Art
  A catalogue of major Land Art works with coordinates and links to satellite images, topographic maps and informational websites.

• Looking for Earth Art with Google Maps
  Land Art links to Google Maps, other satellite images and informational websites.

View Land+Living Maps in a larger map
James Turrell's Roden Crater via Google Maps

Locating Chandigarh via EarthSearch

Washington DC via TerraServer

Michael Jackson's Neverland Ranch via Google Maps