This green strip beneath the Kremlin's north wall was once a river that further isolated the fortress from its enemies. Now it's perfect for a peaceful stroll and perhaps a taste of ice cream or the savory pies sold along the path (avoid the hot dogs). At the gardens' entrance is an elegant marble monument of a helmet abandoned next to a flame. This Tomb of the Unknown Soldier was erected to honor those killed in World War II, and is surrounded by plaques to Soviet cities honored for their valiance and suffering at Nazi hands. The tomb, and the surrounding gardens, are often graced by newlyweds making a tour of Moscow sights after exchanging rings. The gardens run parallel to Mokhovaya Ulitsa, between the street and the Kremlin wall.