Meet your coach outside the cruise terminal gates for the drive to Toompea Hill in central Tallinn. From this overlook you'll have picturesque views over the towers and red-tile rooftops in the Estonian capital's lower town.
Start your walking tour at Alexander Nevsky Cathedral, built in the Russian Orthodox–style of Moscow's 17th-century churches. Marvel at the mosaic-filled interior, then follow your guide through narrow, cobbled streets to St. Mary's Cathedral. You can opt to pay a nominal fee to enter the13th-century domed church, one of Estonia's oldest.
Descend to the Town Hall Square for a look at the imposing Tallinn Town Hall, a Gothic structure completed in 1404. Stroll through the cobblestone walkway of St. Catherine’s Passage, sprinkled with artist studios and a collection of medieval tombstones located next to Dominican Monastery Claustrum. Learn from your guide about the Walls of Tallinn, 16th-century fortifications that comprised Tallinn’s elaborate defense system.
The guided portion of your tour ends on Viru Street by the Viru Gates. You'll have free time in Old Town to shop or eat before the drive back to the cruise port.