Bicimad (www.bicimad.com) is Madrid's public bike-share service with almost 200 docks scattered around the city center. The bikes are electric, meaning you hardly have to pedal, and are an excellent alternative to the metro and buses, provided the weather is good and you're comfortable riding in traffic (separate bike lanes are virtually nonexistent). Locals can purchase a yearly membership, but visitors can pay per ride, buying a ticket at each service station. The bikes can be borrowed from, and returned to, any station in the system. Occasional users pay €2 for the first half hour and €4 for each successive half hour.