this is cartagena

Cartagena - Colombia 

The city of Cartagena was the first Spanish colony on the American continents. It became a main hub for transporting precious stones and minerals from the Americas, back to Europe. The shady plazas, cobblestone streets, and colonial architecture make this city popular with international and domestic travelers. 

Some points of interest in the city include a 17th century fortress, designed by Dutch engineer Richard Carr,  the historic old town and its surrounding city wall, various museums, and a number of churches. Nearby white sandy beaches offer a relaxing escape from the city streets.