Cadiz is a city and port in southwestern Spain. The older part of Cadiz within the remnants of the city walls is commonly referred to as the Old Town It is characterized by the antiquity of its various quarters, among them El Pópulo, La Viña, and Santa María, which present a marked contrast to the newer areas of town. While the Old City's street plan consists of narrow winding alleys connecting large plazas, newer areas of Cadiz typically have wide avenues and more modern buildings. In addition, the city is dotted with numerous parks where exotic plants flourish, including giant trees supposedly brought to Spain by Columbus from the New World. Cadiz, situated on a peninsula, is home to some of Spain's most beautiful beaches. La Playa de la Caleta is the best-loved beach of Cadiz. It has always been in Carnival songs, due to its unequalled beauty and its proximity to the Barrio de la Viña. It is the beach of the Old City, situated between two castles, San Sebastian and Santa Catalina. La Caleta and the boulevard show a lot of resemblance to parts of Havana, the capital city of Cuba,