Barcelona is the capital and largest city of Catalonia and is Spain's second-largest city, with a population of over one and a half million people.

Located on the northeastern Mediterranean coast of Spain, this city has a rich and diverse history, with its roots dating back to Roman times. The fruitful medieval period established Barcelona's position as the economic and political center of the Western Mediterranean. The city's Gothic Quarter bears witness to the splendor enjoyed by the city from the 13th to the 15th centuries.
The 20th century ushered in widespread urban renewal throughout Barcelona city, culminating in its landmark Eixample district, which showcases some of Barcelona's most distinctive Catalan art-nouveau, or modernista, buildings. The Catalan Antoni Gaudí, one of the most eminent architects, designed buildings such as La Pedrera, the Casa Batlló, and the Sagrada Família church, which have become world-famous landmarks.
In 1992, Barcelona gained international recognition by hosting the Olympic games, which brought about a massive upturn in its tourism industry. For visitors, this has translated into the very modern yet incredibly old city you see now in the 21st century, where new elements work to both preserve and celebrate the city’s heritage and origins.
Barcelona has plenty of outdoor markets, restaurants, shops, museums, and churches. The city is also very walkable, with an extensive and reliable Metro system for more far-flung destinations.
For a complete overview, see wikitravel.org or visit barcelonaturisme.com.


The Sant Jordi Day is a unique celebration that takes place annually in Catalonia on April 23rd. Its origins lie in the legend of Saint George, the patron saint of Catalonia, who defeated a dragon to rescue a princess. Traditionally, on this day couples, friends and family exchange books and roses.
Barcelona transforms into an open-air bookshop, offering a wide selection of books spanning various genres. Roses, often adorned with symbolic touches such as the Catalan flag, become a treasured gift.
Sant Jordi Day not only honors culture and literature; but also creates a beautiful atmosphere on the streets. The air is filled with cultural activities, concerts, and events that revolve around the celebration of love and literature. Take this chance to immerse yourselves in the culture and customs unique to Catalonia!
The AXA Convention Centre is located in a vibrant modern zone of the city, with easy access from the airport, as well as the urban and suburban areas of the city. It is part of the "L'Illa Diagonal", a modern complex with a shopping center, two four-star hotels, several offices, a sports center, a public park, and a car park with 2500 spaces.

Address: Avinguda Diagonal, 547, 08029 Barcelona
By plane: The international airport of Barcelona is called Barcelona-El Prat and is located 10 km from the city center. The airport is well connected to airport hubs in Europe and several locations around the world. For more information about the airport and flights, please visit the official website at https://www.aena.es.
Once you get to the airport, you have several options to reach the city center.
To the city center:
To the conference venue:
By train:Barcelona Sants station is Barcelona's largest train station and provides rail services both in and around Barcelona and for the whole of Spain and beyond. For more information about the station and train service, please visit the official website at https://www.renfe.com.
Once you get to the station, you have the following options to reach the conference venue:
We want your stay in Barcelona during the conference to be as comfortable as possible. With that in mind, we have agreed on a discount with several hotels to make your accommodation choice easier. Please book your accommodation online and contact the hotels directly with any issues or requests related to accommodation bookings.
We are delighted to announce that the following hotels will offer a discounted price for all MMCS 2024 attendees:
Beware of Unauthorized Registration and Hotel Solicitations
Note that Sciforum is the only official registration platform to register to MMCS 2024 and that we are not associated with any hotel agency (other than those listed above). While other hotel resellers and travel agencies may contact you with offers for your trip, they are not endorsed by or affiliated with MMCS 2024 or Sciforum. Beware that entering into financial agreements with non-endorsed companies can have costly consequences.
Please note that you must apply for your own visa application. MDPI is not responsible for any visa application. However, MDPI can provide a Visa Support Letter. To be eligible for such a document, the criteria below must be fulfilled.