Mysteries of our planet - Overview

Leaning tower in Italy sealed off over fears it could collapse into nearby buildings A 900-year-old leaning tower in the Italian city of Bologna has been sealed off over fears it will collapse into nearby buildings. The 47m tall Garisenda Tower tilts at a four-degree angle and is likely to topple over due to disintegrating stonework and cracks in the brickwork, authorities said.

Bohemian Grove. The place where the most influential people in the U.S. have been gathering for over 100 years for strange rituals Located in California, near the town of Monte Rio, on the shores of the Russian River, Bohemian Grove has been a haven for the American elite since the late 19th century. The symbol of the grove - a wise owl. A nine-meter owl statue stands by the lake in the grove and takes part in the club's rituals and productions. The motto of Bohemian Grove is Weaving Spiders Come Not Here. Becoming a member of the Grove is the dream of everyone who has reached some kind of heights in the United States - no matter in politics, business, journalism or sports.

The Palazzo Colonna is a palatial block of buildings in central Rome, Italy, at the base of the Quirinal Hill, and adjacent to the church of Santi Apostoli. It is built in part over the ruins of an old Roman serapeum, and it has belonged to the prominent Colonna family for over twenty generations. The first part of the palace dates from the 13th century.

Amazing Video Shows A Whale With Its Tail Seemingly Frozen Out Of Water The enigmatic whale showing off a rather remarkable trick – like pulling off a handstand, it kept its tail fin arrow-straight above the water surface. Experts say the strange action is an example of 'tail sailing' which sees whales lifting themselves out of the water for long periods of time. Exactly why they do it is unknown.

Temple of Jupiter in the city of Baalbek It is noteworthy because it does not fit into the official history. The weight of these columns is about 1,000 tons. Even today, using modern technology, it is difficult to build such a structure.

Fortress of Our Lady of Grace, Portugal. Originally called the fortress of Count Lippe, named after a Englishman Guillermo de Schaumburg-Lippe who reorganized the Portuguese army, and who ordered it to be raised in 1763 when he saw the strategic importance of the area.

A model of the moon at the Museum of Natural History, 1898.

Tooth of a megalodon found off the coast of North Carolina

The Doria Pamphilj Gallery is a large private art collection housed in the Palazzo Doria Pamphilj in Rome, Italy, between Via del Corso and Via della Gatta.

Building the first Ferris wheel for the Chicago world's fair in 1893. The original Ferris Wheel, sometimes also referred to as the Chicago Wheel, was designed and built by George Washington Gale Ferris Jr. as the centerpiece of the Midway at the 1893 World's Columbian Exposition in Chicago, Illinois. Since its construction, many other Ferris wheels have been constructed that were patterned after it. Intended as keystone attraction similar to that of the 1889 Paris Exposition's 324-metre (1,063 ft) Eiffel Tower, the Ferris Wheel was the Columbian Exposition's tallest attraction, with a height of 80.4 metres (264 ft). The Ferris Wheel was dismantled and then rebuilt in Lincoln Park, Chicago, in 1895, and dismantled and rebuilt a third and final time for the 1904 World's Fair in St. Louis, Missouri. It was ultimately demolished in 1906.