Forest Guitar, Argentina: Breaking up the flat agricultural areas of Argentina's Pampas is a guitar formed entirely out of trees. Stretching for 2/3 of a mile (1km), the multi-colored instrument was created by one Argentine farmer to memorialize his wife. Crushed by the loss of his love, a few years later Pedro Martin Ureta (owner) began working on designing a guitar in his field that could be seen from above by airplane. He settled on the design because his late wife loved the instrument and he wanted to memorialize her on his land. Working tirelessly to plant and cultivate the trees, Ureta created a perfect guitar shape, complete with a star-shaped hole in the middle. Using mostly cypress trees to form the outline, Ureta used blue eucalyptus trees to accent the strings on the neck of the guitar. Easily visible from airplanes, the guitar brings joy to many who fly over the Pampas. Are you familiar with the Forest Guitar that is located in Argentina?

Spiral Jetty, USA: Spiral Jetty is an earthwork sculpture constructed in April, 1970 that is considered to be the central work of American sculptor Robert Smithson. Built on the northeastern shore of the Great Salt Lake near Rozel Point in Utah entirely of mud, salt crystals, basalt rocks and water, Spiral Jetty forms a 1,500-foot-long (460 m), 15-foot-wide (4.6 m) counterclockwise coil jutting from the shore of the lake. The water level of the lake varies with precipitation in the mountains surrounding the area, revealing the jetty in times of drought and submerging it during times of normal precipitation. Originally black basalt rock against ruddy water, Spiral Jetty is now largely white against pink due to salt encrustation. Have you ever heard of the American sculptor Robert Smithson who constructed the Spiral Jetty?

Heart-Shaped Meadow, UK: An English farmer created a heart-shaped meadow surrounded by oak trees in memory of his wife (he lost her 17 ​​years ago), that was unknown to the world until a balloonist spotted it. This beautiful meadow is located in the south English countryside. Winston Howes (farmer) spent a week planting 6,000 oak saplings and also planted a hedge for added privacy. He designed the monument so the point of the heart is toward Wotton Hill, where his wife was born. The hidden meadow was a family secret until July 2012. Do you think this hidden meadow should have been kept private and unknown to the world?