City Go

The Paris sewer system dates back to 1370 when the first underground sewer was built under rue Montmartre. Since then the system has been enlarged to cover the city's population. The museum is dedicated to the history of the sewer system, from the days of Roman Lutéce to the present day, through a 500 metres underground path. Tours of the sewers system have been popular since the 19th century and visitors are able to walk upon raised walkways directly above the sewers. As for smell... not as bad as you would expect in a sewer. Opening hours: Sat-Wed 11 a.m. to 5 p.m. May to Sep; to 4 p.m. the rest of the year; closed for two weeks in January. Entrance fee: €4.40 How to go: Metro/ RER Alma Marceau/ Pont de l'Alma

The Roman villa in Milreu dates back to the 1st century AD. However, these initial constructions remain to be dug and most of what can be seen dates from the 3rd century AD. The villa is organised around a peristyle which would have 22 columns. It was decorated with mosaics depicting maritime motifs. In the 6th century, the pagan temple was converted into a Christian church. The premises were later used as a Muslim cemetery.It is likely that the site was only abandoned in the 10th century when the vaults of the religious monument collapsed. In the 16th century, a rural house was built; it is a unique example of the Algarvian civil architecture of the period. Opening hours : 9 a.m. to 1 p.m. // 2 p.m. to 5.30 p.m. (6.30 May to Sep) Entrance fee : €2 How to get there : From Faro, take bus 65 .

Saint George's Basilica is the oldest church building within Prague Castle. It was founded in 920 by Prince Vratislav and enlarged in 973 with the construction of Saint George's Benedictine Abbey. It was built in the Romanesque style. It had to be rebuilt in 1142 after a fire, and the Baroque facade dates from the 17th century. It is the resting place of several historic figures, such as St. Ludmila, Prince Vratislav and Boleslav II. Opening hours:  Nov-Mar 9 am to 4 pm (12 pm to 4 pm on sun.); Apr-Oct 9 am to 5 pm (12 pm to 5 pm on sun.) Entrance fee:  St. George's Basilica is included in Prague Castle. There are two visiting options: Prague Castle – route A (CZK350, €13.16 April 2017) The Old Royal Palace, a permanent exhibition "The Story of Prague Castle", St. George's Basilica, the Golden Lane, the Powder Tower, St. Vitus, Wenceslas and Adalbert Cathedral, the Rosenberg Palace. Prague Castle – route B  (CZK250, €9.40 April 2017) The Old

Evidence of human presence in the region dates back to the Neolithic period. During the Iron Age,  with the expansion of the "castro" culture and the Bracari, a Celtic tribe,  a series of "castros" (fortified settleme nts) were built. Bracara Augusta, the Roman city, was likely built on top of a major "castro",  destroyed due to the wars between the Bracari and the Roman army. The city was named both after the Celtic tribe and the emperor, to whom it was dedicated. During the Roman period, several public buildings were constructed, namely the theatre, the baths , and temples. In the 3rd century, when the province of Gaellecia was created, Bracara Augusta became its capital and by 385 it already had a bishopric and an important role in the Christianization of the Iberian Peninsula. With the fall of the western Roman empire, Bracara becomes the capital of the Suebi Kingdom and is later dominated by the Goths. From 715 the city is conquered and domin

Raio Palace was built between 1752 and 1755 in the Baroque style. It was renovated in the 19th century when the tiles were added. It has a permanent exhibition of religious art. Opening hours : Tue-Sat, 10 a.m. to 1 pm// 2.30 pm to 6.30 pm Entrance free (you're invited to leave a small contribution) Back to Braga

Marsaxlokk is a picturesque fishing village in the south-eastern part of Malta. It's popular for its daily open-air market and its fish restaurants. How to go: Take routes 81 or 85 from La Valletta. Back to Malta 

The Eiffel tower was built for the 1889 Universal Exhibition, which was held to celebrate the centennial of the French Revolution. It was built in 2 years, 2 months and 5 days, a veritable technical and architectural achievement. The tower was intended to only last 20 years but was saved by scientific experiments, particularly the first radio transmissions, to become a symbol of Paris.  The tower is 324m tall and is constituted by 18,000 parts held together by 2,500,000 rivets. It has a total weight of over 10 tonnes and receives about 7,000,000 visitors per year. Opening hours : 9 a.m. to midnight from mid-June to early September; 9.30 a.m. to 11 p.m. the rest of the year. Entrance fee : lift entrance ticket to the top €17; lift entrance ticket to the 2nd floor €11; stairs entrance ticket to the 2nd floor €7. You can buy your  tickets online . How to go : metro stations Bir Hakeim or Alma-Marceau.

The Lower Barrakka Gardens is a public garden in Valletta, twinned with the Upper Barrakka Gardens, and allows for a magnificent view of the entrance of the Grand Harbour and Fort Saint Angelo, in Vittoriosa. The garden is home to a number of trees, constituting a relaxing place and a refuge in the hot summer months. The garden includes a statue of Alexander Ball, erected by public subscription in 1810. Alexander Ball directed the blockade of Valletta, against the French, in 1798-1800 and later became the first British Governor of Malta. The garden also includes the Siege Bell Memorial, in remembrance of the Great Siege of Malta during World War II. Opening hours: 7 am to 10 pm; Entrance free Back to Valletta

In the 2nd century AD, the Romans transformed the remnants of an old "castro" into a military fortification. Five centuries later the site was conquered by the Moors who built the original castle. Some of the Almohad walls built or reinforced in the 12th century are still visible, scattered around the city. After being definitely reconquered by D. Paio Peres Correia in 1249 the castle was rebuilt and it is segments of this period that are still visible today. The castle was badly damaged by the Great Earthquake of 1755 and whatever was left was incorporated in the buildings constructed after the earthquake. In recent years significant efforts have been made to recover the monument. Opening hours : Tue. to Fri. 10 a.m. to 5.30 p.m. (6 p.m. Jun. to Sep.); Sat. 10 a.m. to 4 p.m. (4.30 p.m. Jun. to Sep.); Entrance fee : €1.62 (inc. archaeological museum)