The Old Portland Underground, better known as the Shanghai Tunnels, is a group of passages in Portland, Oregon, which lie underneath the Old Town Chinatown neighborhood and connect the basements of many hotels and taverns to the waterfront of the Willamette River. They were originally built to move goods from the ships docked on the Willamette to the basement storage areas, allowing businesses to avoid streetcar and train traffic on the streets when delivering their goods.