Cartagena is situated on the Costa Calida in the region of Murcia. This has been an important port since ancient times due to its strategic position and deep-water harbour. Today the city is home to a major part of the Spanish navy. In recent years the government has invested a lot of money to turn Cartagena into a popular tourist destination. There are now a wealth of attractions including museums, palaces and churches. Most of the main sights are located within walking distance of one another in the historic city centre.

Cartagena was founded by the Carthaginians (hence its name), and later fell under Roman control. Although Cartagena became an important Roman town there is not much visible evidence of their occupation. A notable exception is the spectacular remains of a theatre which have recently been uncovered. The theatre is notable for the rows of seats which have been built into the hillside. Another important Roman monument is the Augusteum, so-called because this was the meeting place for a cult inspired by Emperor Augustus. Many of the finds from these two sites are now displayed in the Municipal Museum of Archaeology, which traces the history of Cartagena from ancient times up until the 19th century.

The church of Santa Maria de Gracia, which dates back to the 18th century, is one of Cartagena's finest buildings. Inside are some excellent sculptures by Salzillo, including one of the Four Saints. Close to the church are the ruins of the medieval Concepcion Castle from which there are some excellent views over the city.

Cartagena's seafaring history is explored in two museums; the Naval Museum and the National Museum of Maritime Archaeology. The Naval Museum is housed within a Modernista-style building constructed during the early 20th century. Inside is a large collection of maps and models of ships. There is also a room dedicated to Cartagena-born Isaac Peral who designed the famous Peral submarine launched in 1888. The original submarine is situated near the marina. One of the highlights of the National Museum of Maritime Archaeology, which houses artifacts recovered from the seabed, is an interesting section of an ancient Roman vessel. There are also models of ships, maps and other historical documents.

If you are planning to visit many of the city's historic sights, the Cartagena Card, available from tourist offices, may be a good investment. The card is valid for two weeks and includes free admission to many attractions as well as free travel on the tourist bus.

There are various activities available in the Cartagena area, including sailing, diving and windsurfing. Close to the city is an unspoilt stretch of coastline occupying part of the Calblanque Regional Park, notable for its small coves, dunes and sandy beaches. The park also has mountains and pine forests, and is an excellent area for walking, cycling and bird watching.

The nearest airport to Cartagena is Murcia San Javier, around 18 miles (30km) away. There are no direct buses from the airport to Cartagena, but taxis should cost about 40 euros.