The El Paso-Juárez Trolley Company (tel. 915/544-0062) offers trolley tours that venture into Mexico, New Mexico, and historic El Paso for $10 to $20, depending on the package. Juárez tours depart hourly from One Civic Center Plaza from 10am to 4pm year-round. Call for information on other tours, which are offered seasonally. Si! El Paso Tours (tel. 800/658-6742 or 915/541-1308) offers tours and transportation on both sides of the border. The El Paso CVB (tel. 915/534-0600) can provide travelers with informative brochures that detail self-guided historic walking tours of both El Paso and Ciudad Juárez.