A tunnel with electric switches are seen in Josip Broz Tito's underground secret bunker (ARK) in Konjic, October 16, 2014. In the early 1950s, Josip Broz Tito, the late leader of the former Yugoslavia, ordered the building of the secret bunker, located 900 feet (270 m) underground and near the Bosnian town of Konjic, to safeguard the country's ruling class in case of a nuclear attack. Construction at the complex, which had a cost equivalent price tag of $4.6 billion, continued until 1979, the year before Tito died. (Photo by Dado Ruvic/Reuters)

Ethnic Cham Muslim people pass the time near their boats on banks of Mekong river in Phnom Penh July 29, 2013. About 100 ethnic Cham families, made up of nomads and fishermen without houses or land who arrived at the Cambodian capital in search of better lives, live on their small boats on a peninsula where the Mekong and Tonle Sap rivers meet, just opposite the city's centre. The community has been forced to move several times from their locations in Phnom Penh as the land becomes more valuable. They fear that their current home, just behind a new luxurious hotel under construction at the Chroy Changva district is only temporary and that they would have to move again soon. (Photo by Damir Sagolj/Reuters)

Growing cities, overuse of fertilizers and factory wastewater have degraded China's water supplies to the extent that half the nation's rivers and lakes are severely polluted. China aims to spend $850 billion to improve filthy water supplies over the next decade, but even such huge outlays may do little to reverse damage caused by decades of pollution and overuse in Beijing's push for rapid economic growth. Photo: Fishermen row a boat in the algae-filled Chaohu Lake in Hefei, Anhui province, June 19, 2009. (Photo by Jianan Yu/Reuters)

“Banksy is an pseudonymous England based graffiti artist, political activist, film director and painter. His satirical street art and subversive epigrams combine irreverent dark humour with graffiti done in a distinctive stencilling technique. Such artistic works of political and social commentary have been featured on streets, walls, and bridges of cities throughout the world”. – Wikipedia

Photo: A Bristol Museum employee adjusts one of the latest suprise exhibits by the underground guerrilla artist, Banksy on June 12 2009 in Bristol, England. The exhibition called “Banksy versus Bristol Museum” is one of the largest single collections of the artist works and was organised under tight security and installed in just 36hrs with only a handful of museum staff aware it was even happening. Banksy, whose real identity remains a mystery, is said to hail from the Bristol area, and claims that hosting the exhibition in the city is his way of thanking the city for his early street art career. (Photo by Matt Cardy/Getty Images)

“The Lovell Telescope is a radio telescope at Jodrell Bank Observatory, near Goostrey, Cheshire in the north-west of England. When it was constructed in 1955, the telescope was the largest steerable dish radio telescope in the world at 76.2 m (250 ft) in diameter; it is now the third largest, after the Green Bank telescope in West Virginia, USA, and the Effelsberg telescope in Germany. It was originally known as the 250 ft (76 m) telescope or the Radio Telescope at Jodrell Bank, before becoming the Mark I telescope around 1961 when future telescopes (the Mark II, III, and IV) were being discussed. It was renamed to the Lovell Telescope in 1987 after Bernard Lovell, and became a Grade I listed building in 1988. The telescope forms part of the MERLIN and European VLBI Network arrays of radio telescopes”. – Wikipedia

Photo: The Lovell Telescope listens to the night sky for radio signals from space at Jodrell Bank on June 22, 2011 in Holmes Chapel, England. Jodrell Bank Centre for Astrophysics and it's world famous Lovell Telescope is on the shortlist of Britain's submission for Unesco World Heritage Site status. (Photo by Christopher Furlong/Getty Images)

Broadway Tower is a folly located on Broadway Hill, near the village of Broadway, in the English county of Worcestershire, at the second highest point of the Cotswolds after Cleeve Hill. Broadway Tower's base is 1,024 feet (312 metres) above sea level. The tower itself stands 55 feet (17 metres) high. The “Saxon” tower was designed by James Wyatt in 1794 in the form of a castle, and built for Lady Coventry in 1799. The tower was built on a “beacon” hill, where beacons were lit on special occasions. Lady Coventry wondered if a beacon on this hill could be seen from her house in Worcester – approximately 22 miles (35 km) away – and sponsored the construction of the folly to find out. The beacon could be seen clearly.

South Korean traditional bow artisan Kwon Yeong-Hak works on a bow in his workshop in Yecheon-gun, Gyeongsangbuk-do, South Korea, 26 February 2015. Kwon Yeong-Hak still crafts his bows in the traditional way, carrying on a four-generation family business. The Gakgung bow, of which Kwon is one of the last remaining artisans, is unique to Korea, and is constructed with a variety of materials, including water buffalo horn, oak, bamboo and cattle spinal sinew. A ban on the import of water buffalo horns has put the Gakgung tradition at risk. (Photo by Jeon Heon-Kyun/EPA)

The interior of the ship's bridge on the yacht Galeb is seen in the port city of Rijeka, December 16, 2015. Rijeka announced plans to convert the yacht Galeb used by Yugoslavia's communist leader Josip Broz Tito into a floating museum moored in the city's harbour. Now in disrepair, the 117-metre ship was an iconic symbol of luxury and used by Tito from the 1950s until his death in 1980 to entertain world leaders and celebrities, including the likes of Khruschev, Gaddafi, Indira Gandhi, Elizabeth Taylor and Richard Burton. (Photo by Antonio Bronic/Reuters)