Not too difficult, place the barometer by the building, measure shadow, measure shadow of building, adjust by the known height of the barometer.

FORBES: How to Become James Bond

Once a potent symbol of American frustration with the Vietnam War, the prison is now a tourist attraction, in the shadow of an upscale high-rise building owned by a Singapore businessman.

CNN: 'Hanoi Hilton' now holds only painful memories

As the storm whacked the city in August 2005, a small group of journalists holed up in a hot storage room deep inside the newspaper's building on Howard Avenue in the shadow of the Superdome.

FORBES: Wake Of The Flood