The Greek islands are a unique phenomenon in Europe. Greece counts 6.000 islands and islets scattered in the Aegean and Ionian Seas. You can learn more here.
San Roque Dam (Philippines) The San Roque Dam, operated under San Roque Multipurpose Project (SRMP) is a 200-meter-tall, 1.2 kilometer long embankment dam on the Agno River. It is the largest dam in the Philippines and sixteenth largest in the world (see List of largest dams in the world).
A Portland, Oregon ramp meter. A ramp meter, ramp signal or metering light is a device, usually a basic traffic light or a two-section signal (red and green only, no yellow) light together with a signal controller that regulates the flow of traffic entering freeways according to current traffic conditions.