Bogota, Colombia South America

With a population of about 8.8 million people, Bogota sits approximately 8,660 feet (2640 m) above sea level in the Colombian Andes region. Orientation is relatively easy, as the mountains to the east are generally visible from most parts of the city.
 *It offers a unique experience to its visitors.

Venice , Italy

Venice is a city in northeastern Italy sited on a group of 118 small islands separated by canals and linked by bridges.It is located in the marshy Venetian Lagoon which stretches along the shoreline between the mouths of the Po and the Piave Rivers. Venice is renowned for the beauty of its setting, its architecture and its artworks.The city is divided into six sestieri (districts), and getting acquainted with them will help you get your bearings.Venice in winter is cold and damp—also sometimes flooded—and summertime has roasting sun and mosquitoes.

Anchorage

 Anchorage is a paradisiacal home base for skiers, hikers, fishermen and wildlife watchers, but that doesn't mean the city itself should be ignored. Alaska's metropolis boasts a plethora of attractions, including museums, shops, nightlife venues and a fantastic zoo. And if nature is your true calling, bear in mind that you don't have to skirt the city limits to get your fill: Visit during the summer to experience the City of Flowers (home to more than 400 flower beds) in full bloom or during any other season to be dazzled by the sparkling Northern Lights.
It use to be a city filled with tent and now it has houses.

Paris

Paris is the capital of France, the largest country of Europe with 550 000 km2 (65 millions inhabitants).
Paris is a world capital city of shopping and fashion, with Chanel, Dior, Vuitton, Yves Saint Laurent among many other top french fashion brands .Each year, 44 million tourists visit Paris and the surrounding Ile de France region. Paris is year after year the most visited city in the world.The top Paris attractions are Disneyland Paris (15 million visitors each year), Notre Dame Catheral (13.6), Sacre Coeur (10,5), the Louvre Museum (8,8), Eiffel Tower (7), Versailles Palace(6), Centre Pompidou (5), Cite des Sciences (3).

http://www.parisdigest.com/information/facts.htm

Barcelona

It is the capital of Catalonia and is the second largest city in Spain .
August is probably the busiest time in Barcelona; at the same time about 10% of shops and restaurants can be found closed from mid-August to early September, when the owners go on vacations. In the center of Barcelona you will find most shops and restaurants open. Barcelona is today one of the world's leading tourist, economic, trade fair/exhibitions and cultural-sports centres, and its influence in commerce, education, entertainment, media, fashion, science, and the arts . Well known for it's football (soccer) .

Rio De Janeiro

It's a city in Brazil. Rio has a tropical savanna climate that closely borders a tropical monsoon climate according to the Köppen climate classification, and is often characterized by long periods of heavy rain from December to March . Most people there are black or part black .Rio de Janeiro is Brazil's primary tourist attraction and resort. It receives the most visitors per year of any city in South America with 2.82 million international tourists a year.
It is most famous for it's statue Christ the Redeemer .

Puerto Rico

 Puerto Rico has both 20-foot waves for surfers and calm, clear waters for families. It's a stroll back through time (El Morro) and an up-close look at the contemporary (Calle del Cristo). It's an exhilarating mix of landscapes, from the serpentine jungle of El Yunque to the corkscrew caves of Parque de las Cavernas del Río Camuy. And if you want to get away from civilization entirely, you can ferry over to the secluded -- not to mention jaw-droppingly gorgeous -- islands of Vieques and Culebra.Puerto Rico really should be explored over at least three or four days.Much of Puerto Rican culture, from the food to the music and the people's sensibilities, represent the island's combined North American, Caribbean and indigenous Taíno ancestry.