The Lakes of Mount Kelimutu, Indonesia are considered to be the resting place for departed souls, the lakes are locally referred to as "the lake of evil spirits". All 3 lakes change colour from blue to green to black or red unpredictably.
Wonders of nature. In a tiny corner of western Poland a forest of about 400 pine trees grow with a 90 degree bend at the base of their trunks - all bent northward. Surrounded by a larger forest of straight growing pine trees this collection of curved trees, or "Crooked Forest," is a mystery.