Porto is the second-largest city in Portugal and among the oldest cities in Europe, that has managed to preserve numerous historic buildings and outstanding monuments. It has been continuously inhabited since at least the 4th Century, when the Romans referred to it as "Portus Calle".
The city developed as an important trade hub, renown worldwide for its main export - Port Wine, which is in fact considered to be the main reason why both the magnificent city and country got their names.
For centuries Port wine has been produced in the nearby Douro Valley, scattered with breathtaking vineyards. Thus its no surprise that the city boasts many wine cellars, especially across the river at Vila Nova de Gaia, inviting visitors for tastings. The coastal beauty's waters are still trafficked with old cargo boats, that used to transfer wine and now carry passengers along Porto's picturesque riverside.
The colorful sunlit hilly city has much to show as it's quite varied architecturally: medieval relics, exquisite bell towers, unique baroque churches and fancy beaux-arts buildings. Among the main architectural attractions is the 14th-century São Francisco church.
There are also six incredible bridges connecting Porto, the most emblematic of them is the Dom Luis I bridge recognized by its massive arch. Among others are the the Arrábida bridge that was once the longest reinforced concrete bridge span in the world and the Maria Pia bridge, which was Gustavo Eiffel's first masterpiece.