
Address: C/ de Balmes, 132, 134, 08008 Barcelona, Spain
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.
Explore our Travel Guide and discover ideas on how to make the most of your free time during the conference in Barcelona.
For a complete overview, see wikitravel.org or visit barcelonaturisme.com.

Barcelona is a vibrant and accessible city with excellent transportation links. Whether you're arriving by plane, train, or other means, there are convenient options to reach your destination. Below, you'll find detailed guidance to ensure a smooth journey to the conference venue.
The international airport of Barcelona, Barcelona-El Prat, is located 10 km from the city center. It is well connected to major airport hubs in Europe and various locations worldwide. For more information about the airport and flights, please visit the official website: https://www.aena.es. Once you arrive at the airport, you have several options to reach the venue:
Barcelona Sants is the city's largest train station, providing rail services for Barcelona, the rest of Spain, and international destinations. For more information about the station and train services, please visit the official website: https://www.renfe.com. Once you arrive at the station, you have the following options to reach the venue:
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.
Applicants must have paid for registration and submitted an abstract in order to get a letter of support.
Applicants must provide us with a scan of their valid, in-date passport that contains a photo of them.
Applicants must provide us with a letter of support from their institution to confirm that they support the delegate attending the meeting.
This must be carried out in good time before the meeting; “last minute” requests will not be processed.