Lunar Power Plant in the Works...

Japanese firm wants to transform the Moon into a giant solar power plant
(PhysOrg.com) -- The Shimizu Corporation, a Japanese construction firm, has recently proposed a plan to harness solar energy on a larger scale than almost any previously proposed concept. Their ambitious plan involves building a belt of solar cells around the Moon’s 6,800-mile (11,000-kilometer) equator, converting the electricity to powerful microwaves and lasers to be beamed at Earth, and finally converting the beams back to electricity at terrestrial power stations. The Luna Ring concept, the company says, could meet the entire world's energy needs.

Meteoras - Another stop on my travel list.

In medieval Greece, the monks of the ancient Byzantine Empire found themselves under attack by pirates and other undesirables. They built the monastaries of Meteoras to counter this threat. They are a series of fortified monastaries built on the tops of mountains and rocks, some thousands of feet up with no way to reach them but rope or ladder. These monks have lived in the cracks, caves, and hollows of these rocky abodes for hundreds of years, outlasting the Empire that created them. They are still occupied to this day.

Photo by IHarsten.