Avenue. Tours of the gardens and the "casitas" (small homes of cigar company workers) are provided by a ranger. Exhibits, period photos and a video cover the founding of Ybor City and the cigar making industry. Boundaries Historically, the boundaries of "Greater Ybor City" stretched from Tampa Bay on the south to Dr. Martin Luther King Jr. Blvd. (formerly Buffalo Avenue) on the north, and from Nebraska Avenue on the west to 40th Street on the east. This eventually included all of today's neighborhoods of Historic Ybor, East Ybor, VM Ybor, and Ybor Heights plus a portion of East Tampa. The Ybor City Historic District encompasses the central portion of that area, approximately straddling Interstate 4, which bisected the neighborhood in the 1960s. The official boundaries of the Historic Ybor neighborhood are I-4 to the north, 22nd Street to the east, Adamo Drive to the south, and Nebraska Avenue to the west. The area of this district is about 1 square mile (about 2.6 km2). Though modern Ybor City also includes some of the surrounding area, its exact dimensions are loosely defined and subject to debate. Population At the height of its life as a thriving immigrant community, Ybor City's population was numbered in the tens of thousands. In the lowest point in the late 1970s, perhaps 1000 residents called the neighborhood home. In recent years, the numbers have begun to climb once more. Ybor City's population grew an estimated 42.5% between 2000 and 2003, mainly as a result of new condominium and apartment construction. As of 2003, approximately 2,900 residents lived in the area. Economy and land use Ybor City is one of the oldest sections of Tampa and is almost entirely an urban, built-up area. Commercial property comprises almost 50% of the land, institutional use (including the Hillsborough County Sheriff's Operations Center and a satellite campus of Hillsborough Community College) 16%, residential use about 23%, and industrial use about 7% According to a 2003 survey, the top five business types in the area were professional services (22.8%), retail (18.4%), manufacturing (14.0%), wholesale/distribution (13.2%), and restaurants & bars (11.4%). Transportation For the most part, Ybor City still uses the gridded street system laid out by Gavino Guiterrez in 1885. Many roadways are now paved with modern materials, though a few brick streets remain. Because 21st and 22nd Streets, which cut north–south through the area, were once the main traffic