Visit Les Arènes, a twin-tiered amphitheatre which is the best preserved of its kind in France. Over 2000 years old, the arena once seated 24,000 spectators. Grab an audio guide to provide you with context as you explore the arena before viewing replicas of gladiators' armour in the museum.

Uncover Nîmes' rich history at the interractive Musée de la Romanité. In stark contrast to the Roman Amphitheatre standing just opposite, the Musée de la Romanité is housed in a striking futuristic glass and steel structure designed by Elizabeth de Portzamparc, showcasing artefacts and exhibitions exploring the life of local people over the course of 25 centuries. 

Take a stroll around the Jardins de la Fontaine, grand 18th-century gardens located around the water source where ancient Nîmes was first founded. Discover the Roman monuments and statues here at one of Europe's first public parks.

Visit one (or all) of the galleries that make up Madrid's 'Golden Triangle': the Museo del Prado, Reina Sofía and the Thyssen-Bornemisza, each of which houses some of the most world's most prestigious artworks.

A world-class collection of modern art with permanent displays – including the must-see Guernica by Picasso – as well as temporary exhibitions.

Take a break from exploring and spend an afternoon relaxing in Madrid's most beautiful park, El Retiro. There's a mix of formal gardens, water features and wilder, woodier areas to explore.

For the best views of the city, climb the 45m tall watchtower to its rooftop terrace. The tower was built in the 1700s when trade was booming and it was used to monitor ships coming into the harbour. One level below is the camera obscura, a visual projector which is showcased every half hour.

Cádiz is famed for its history as one of the oldest cities in western Europe. The Roman Theatre, built around 70BC, is well worth a visit and easily reached on foot. The theatre is thought to have welcomed 10,000 spectators in its heyday. Guided tours are available.

You will be greeted by the scents of rose and lavender at the Palais Amani hotel hammam. After being pampered, you can relax with tea in the stunning zen courtyard trickling with fountains. 

The sights and smells of the Chouara Tannery are a sensory experience and a photographer's delight. You can see the men hard at work in the pools of various hues from the balconies of the leather shops. 

The car-free medina of Fez is classified as the oldest in the world. A guided tour here will take you through various culinary spots that are nestled in former caravanserais, serving seasonal produce.

There's a bunch of top-notch French in Casablanca, but Le Relais De Paris offers one of the best views of the sea. Pair traditional French dishes such as the roasted châteaubriant with a glass of Moroccan wine. 

Its bedecked minaret dominating Casablanca’s skyline, the Hassan II Mosque is the city’s crown jewel. For non-Muslims, guided tours are the best way to explore the mosque during non-prayer hours. 

A five-minute walk south of Place Mohammed V lies the Parc de la Ligue Arabe. This tranquil oasis away from the cacophony of the city has varieties of flora native to the African continent. 

Overlooking Barcelona, Montjüic is a hilltop vantage point a world away from the labyrinthine streets of the city below. Explore the castle and botanic gardens, and see the grand Olympic Stadium originally built for the 1929 Olympics and refurbished for the 1992 Games.

Explore the diminutive but diverse collection of erotica from across history at Barcelona's Museu de l'Erotica. From pictures of lithe Kama Sutra bodies to the voluptuousness of Japanese Shunga drawings, this museum opens a door into the history of desire and sexual expression.

Discover Barcelona's rich heritage in this vast living museum, with its main building on Plaça del Rei. The Museu d'Historia de Barcelona (MUHBA) contains the remains of Roman villas, an underground winery and the largest Roman excavation outside Rome.