St. Paul Street and Calvert Street are a one-way pair of streets in Downtown Baltimore and areas north. The streets, which are part of Maryland Route 2, are two of Baltimore's best-known streets in the downtown area. St. Paul Street St. Paul Street begins off Charles Street just south of Coldspring Lane near Loyola College (now renamed Loyola University Maryland) From this point on, the street runs directly parallel to North Charles Street, exactly one block east of Charles Street. It carries Maryland Route 139 in the southbound direction until intersecting North Avenue (formerly Boundary Avenue with northern city limits of 1818-1888) (U.S. Route 1), where MD 139 ends. St. Paul Street is two ways until the intersection with 31st Street. Northbound traffic is relegated to a single northbound lane, separated by median, and with metered parallel parking. St. Paul Street is exit 4 off the Jones Falls Expressway (I-83). Approaching the downtown area moving south between East Centre and Lexington Streets, St. Paul Street is split into two parallel, nearby streets, also being identified as St. Paul Place in this area. The wider eastern thoroughfare was the former narrow alley-like Courtland Street, once flanked by rows of small brick and stone townhouses. While the more westward of the two sides of St. Paul Street/Place intersects with all east-west streets within these blocks, the eastward opposite wider side passes under the Orleans Street Viaduct (US 40). The area between the two St. Paul streets, landscaped into terraced gardens and parks with fountains are known as Preston Gardens, replaced a group of 1820s Georgian, Federal and Greek Revival styled architecture townhouses which had become shabby by the early 20th century along Courtland Street and the original parallel St. Paul Street and the five square blocks north to south were razed in 1919 as the city's first "urban renewal" project and was landscaped by Thomas Hastings. Preston Gardens were named for James H. Preston, who was mayor of the City of Baltimore (1911-1919, and a Speaker in 1894 of the Maryland House of Delegates of which he served 1890-1894. Notable landmarks Penn Station Mercy Hospital (now Mercy Medical Center), originally located on parallel eastward Calvert Street at East Saratoga Street since 1870s. Calvert Street As St. Paul Street is mostly one-way southbound, Calvert Street, which is directly east of St. Paul, is open to northbound traffic. North Calvert Street is a name