Sa Pa is a frontier township in Lào Cai Province in north-west Vietnam. It was first inhabited by people about whom nothing is known. They left in the entire valley hundreds of petroglyphs, mostly composed of lines, which experts think date from the 15th century and represent local cadastres.
Hanoi is the capital of Vietnam and the country’s second largest city by population. The French built a modern administrative city south of Old Hanoi, creating broad, perpendicular tree-lined avenues of opera, churches, public buildings, and luxury villas.
Hong Kong is a special administrative region in southern China. With over 7.4 million people of various nationalities in a 1,104-square-kilometre territory, Hong Kong is the world’s fourth-most-densely-populated region.
Lisbon is the capital and the largest city of Portugal. Lisbon is one of the oldest cities in the world, and the oldest in Western Europe. Julius Caesar made it a municipium called Felicitas Julia, adding to the name Olissipo.
Grand Cayman is the largest of the three Cayman Islands. Grand Cayman encompasses 76% of the territory’s entire land mass. The island is approximately 35 km long with its widest point being 13 km wide.
The Panama Canal is an artificial 77 km waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean. The canal cuts across the Isthmus of Panama and is a key conduit for international maritime trade. There are locks at each end to lift ships up to Gatun Lake, an artificial lake created to reduce the amount of excavation work required for the canal.