Prague

Prague, capital of the Czech Republic, is bisected by the Vltava River. Nicknamed “the City of a Hundred Spires,” it's known for its Old Town Square, the heart of its historic core, with colorful baroque buildings, Gothic churches and the medieval Astronomical Clock, with a popular show. Completed in 1402, pedestrian Charles Bridge is lined with 30 statues of saints.

Hubble Space Telescope

The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990, and remains in operation. With a 2.4-meter (7.9 ft) mirror, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared spectra. The telescope is named after the astronomer Edwin Hubble. Hubble's orbit outside the distortion of Earth's atmosphere allows it to take extremely high-resolution images with negligible background light. Hubble has recorded some of the most detailed visible-light images ever, allowing a deep view into space and time. Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe.

Swiss Alps

Swiss Alps represents a major natural feature of the country and is, alongside with the Swiss Plateau and the Swiss portion of the Jura Mountains, one of its three main physiographic regions. The Alps cover 65% of Switzerland's surface area (41,285 km²), making it one of the most alpine countries. Despite the fact that Switzerland covers only 14% of the Alps total area (192,753 km²), many alpine four-thousanders (48 of 82) are located in the Swiss Alps and practically all of the remaining few are within 20 km of the country's border. The glaciers of the Swiss Alps cover an area of 1220 km² (3% of the Swiss territory), representing 44% of the total glaciated area in the Alps (2800 km²). The Swiss Alps are situated south of the Swiss Plateau and north of the national border. The limit between the Alps and the plateau runs from Vevey on the shores of Lake Geneva to Rorschach on the shores of Lake Constance, passing close to the cities of Thun and Lucerne.

Costa Rica

Costa Rica, officially the Republic of Costa Rica, is a country in Central America, bordered by Nicaragua to the north, Panama to the southeast, the Pacific Ocean to the west, the Caribbean Sea to the east, and Ecuador to the south of Cocos Island.
All trails seem to lead to waterfalls, misty crater lakes or jungle-fringed, deserted beaches. Explored by horseback, foot or kayak, Costa Rica is a tropical choose-your-own-adventure.

Nepal: Shree Pashupatinath Temple

Pashupatinath Temple, with its astonishing architectural beauty, stands as a symbol of faith, religion, culture and tradition. Regarded as the most sacred temple of Hindu Lord Shiva in the world, Pashupatinath Temple's existence dates back to 400 A.D. The richly-ornamented pagoda houses the sacred linga or phallic symbol of Lord Shiva. Thousands of pilgrims from all over the world come to pay homage to this temple, that is also known as 'The Temple of Living Beings'.

Australia's Great Barrier Reef

The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. It supports a wide diversity of life and was selected as a World Heritage Site in 1981.CNN labeled it one of the seven natural wonders of the world.The reef is located in the Coral Sea, off the coast of Queensland, Australia.

Pluto

Pluto is the largest object in the Kuiper belt, the tenth-most-massive known body directly orbiting the Sun; and the second-most-massive known dwarf planet, after Eris in our Solar System.