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 Nikola Tesla Nikola Tesla (10 July 1856 – 7 January 1943) was a Serbian-American inventor, electrical engineer, mechanical engineer, and futurist best known for his contributions to the design of the modern alternating current (AC) electricity supply system. Born and raised in the Austrian Empire, Tesla studied engineering and physics in the 1870s without receiving a degree, gaining practical experience in the early 1880s working in telephony and at Continental Edison in the new electric power industry. In 1884 he emigrated to the United States, where he became a naturalized citizen. He worked for a short time at the Edison Machine Works in New York City before he struck out on his own. With the help of partners to finance and market his ideas, Tesla set up laboratories and companies in New York to develop a range of electrical and mechanical devices. His alternating current (AC) induction motor and related polyphase AC patents, licensed by Westinghouse Electric in 1888, earned hi...

 Pink Beach Pink Beach or Pantai Merah Muda is one of the beaches in Komodo island, East Nusa Tenggara. The beach is called Pink Beach because the sand beach is pink. The pink color of its beach is a mixture of white sand beach colors mixed with crushed coral, shells, calcium carbonate from marine invertebrates that are very small, and also Foraminifera, microscopic amoeba that has a red body shell. At Pink Beach, there are so many marine organisms. No fewer than 1,000 species of fish, 260 species of coral, and 70 species of sponge can be found here. Having so much marine life, this place is a proper spot for snorkeling and diving for sea sports lovers.

 Colosseum Colosseum is the remains of the Flavian Amphitheatre. It is located in the center of Rome, Italy. The construction process began under the Flavian dynasty. It is the biggest amphitheatre in the world and it is considered to be the greatest work of the Roman architect. Nowadays it is the most visited tourism object in Rome. Colloseum was an eliptical construction of wall surrounding an eliptical arena where various of shows were held as an entertainment for the citizen of Rome. But now what we can see from the building is the remains of the ruin, most of the wall is no longer intact. The building is made of concrete and sand. The size of the building is 29.484 square meters and the size of the arena is 24.000 square meters. The outer wall’s height is 545 meters, and the height of the inner wall is 48 meters. There are 80 entrance that we can use to enter the building, 4 of this entrance, located on each axis of the ellipse shape of the building, was used for noble and eli...