Witness the city's impressive defenses up close by land and by sea on an exciting four-hour adventure that begins with a quick boat ride from the pier to the Old City where you'll commence a guided walking tour within the ancient walls of this historic enclave. Follow narrow cobblestone streets and head through quaint squares to the Clock Tower, the symbol of the city, past panoramic views of San Peter Claver Church and Bolivar Square. Receive an explanation of the Inquisition Palace, see the Cathedral and Santo Domingo Square, then enjoy free time to shop on your own or explore this UNESCO World Heritage city on your own. Return to the boat for a one hour and forty five minute scenic cruise along the tranquil waters of the Inner Bay as your local guide points out the city's fortifications, the colonial highlights and new modern structures best seen from the water. You'll sip refreshing beverages from the open bar and delight in the lively beat as local musicians and dancers groove to the Colombian rhythms. Return to port after this memorable day.