Other places in Europe have their own public transport systems. For instance, you can make use of the Metro system in Rome, which is very reliable and popular for tourists and locals alike. Rome's Metro system is even less expensive than the underground system of London plus fewer queues. The Metro system can take you to different spots in Rome without you having to spend so much.
Riding on a bus or on a train can create a whole new experience for you on your holiday trips. The best way to avail of these public transport systems is to stay near stations. If you stay too far from the city, you'll have a hard time availing of public vehicles. Well, it's up to you. Fetching a taxi or renting a car may be the most convenient for many tourists.