The Inverted Tower - Sintra, Portugal

An underground tunnel with a spiral staircase, supported by carved columns, down to the bottom of the well through nine landings. The nine hole round landings, separated by fifteen steps, evoke references to Dante's Divine Comedy, and may represent the nine circles of hell, paradise, or purgatory.

The well is connected to laberíticas caves that lead to a spooky garden surrounded by a lake.

The Earth Platinum - World’s largest atlas

The world's largest ever atlas has today been unveiled at the British Library in London. The record-setting Earth Platinum atlas, one of only 31 copies in existence, measures 1.854m x 1.45m with a depth of 6cm and required six members of Library staff to carry its 200kg weight through the doors. Launched by Australian publishers Millennium House, theEarth Platinum, consists of 61 pages of maps, all of which are produced using satellite images and another photographic technique which overlays thousands of photographs into a single, seamless image.

Rainbow Eucalyptus - Most Colorful Tree in the World

The Rainbow Eucalyptus (Eucalyptus deglupta) or Mindanao Gum is the only species of Eucalyptus tree found in the northern hemisphere. As if that weren’t extraordinary enough, the up to 70-m tall tree also shines in the colours of the rainbow: its bark can take on a yellow, green, orange and even purple shading. The multi-coloured streaks on its trunk comes from patches of outer bark that are shed annually at different times, showing the bright-green inner bark. This then darkens and matures to give blue, purple, orange and then maroon tones.It grows naturally in New Britain, New Guinea, Ceram, Sulawesi and Mindanao. Now, this tree is cultivated widely around the world, mainly for pulpwood used in making paper, and also for ornamental purposes.

Longest Nonstop flight of a Bird

A female shorebird was found to have flown 7,145 miles (11,500 kilometers) nonstop from Alaska to New Zealand - without taking a break for food or drink.

It's the longest nonstop bird migration ever measured, according to biologists who tracked the flight using satellite tags. The bird, a wader called a bar-tailed godwit, completed the journey in nine days in 2007.