The Arc de Triomf (English: Triumphal Arch) is an archway structure in Barcelona, Catalonia. It was built for the 1888 Universal exhibition, as its main access gate by architect Josep Vilaseca i Casanovas. The arch is built in reddish brickwork in the Moorish Revival style. The front frieze contains the stone sculpture "Barcelona rep les nacions" (Catalan for "Barcelona welcomes the nations") by Josep Reynés. The opposite frieze contains a stone carving named "Recompense", a work from the earliest period of Josep Llimona. The arch is located between Passeig de Lluís Companys and Passeig de Sant Joan, at the end of a wide promenade connecting with the Park of the Ciutadella.

The Palau de la Música Catalana (Palace of Catalan Music) is a concert hall designed in the Catalan modernista style by the architect Lluís Domènech i Montaner. It was built between 1905 and 1908 for the Orfeó Català, a choral society founded in 1891 that was a leading force in the Catalan cultural movement that came to be known as the Renaixença (Catalan Rebirth). It was inaugurated February 9, 1908. The design of the Palau is typical of Catalan modernism in that curves predominate over straight lines, dynamic shapes are preferred over static forms, and rich decoration that emphasizes floral and other organic motifs is used extensively. The concert hall of the Palau, which seats about 2,200 people, is the only auditorium in Europe that is illuminated during daylight hours entirely by natural light.

Queviures Murrià is a big grocery store that is also an impressive work of art. It is famous for stocking the best products from every country. Queviures Murrià is housed in a building of a Modernist style that was designed by Ramón Casas.

Casa Mila, better known as La Pedrera (Catalan for 'The Quarry'), is a building designed by the Catalan architect Antoni Gaudi and built during the years 1905–1910, being considered officially completed in 1912. It was built for the married couple, Rosario Segimon and Pere Mila. Rosario Segimon was the wealthy widow of Jose Guardiola, an Indiano, a term applied locally to the Catalans returning from the American colonies with tremendous wealth. The building is part of the UNESCO World Heritage Site "Works of Antoni Gaudi". The building is now owned by Caixa Catalunya.

The Palau de Baro de Cuadras is one of the unique structures present in Barcelona. Its originality and uniqueness intrigues all those that visit. The wonder lies in the fact that it has not one, but two façades. This architectural trick makes the building look different from different angles. Not only this, but there is yet another surprising factor.

Each façade does not only make the building appear different, it makes a world of a difference in the entire architecture of the structure. From one side, the building resembles a new Gothic Nordic structure, and from the other side it appears to be perhaps the most eclectic example of Modernisme architecture in Barcelona. The mastermind behind the designing of this particular building was the famous Josep Puig i Cadafalch.

The structure was constructed in 1904 and was built as a mansion. The rear end of the building however shows that the main purpose of the building was to be used as a block of apartments. The interior is also surprising with a completely Arabic décor comprising of mosaics and woodwork. It is here that the famous Casa Asia exhibition is held, the main purpose of which is to boost the cultural as well as economical relationship between Europe and Asia.

There is a great misconception even among the locals in Barcelona, that the Casa Comalat was designed by none other than the great Antonio Gaudi. The fact that the architecture of this building is inspired by his work leads many people to believe this theory, but the designer actually was Salvador Valeri i Pupurull, and this building stands as a tribute to Gaudi’s work and contribution to architecture of Barcelona. Salvador began working on this project somewhere in the early 1900s. The main theme of the building, as one can see today, is Modernisme and much like Gaudi’s work, this structure shows prominent curves as well as two façades.
The Casa Comalat reached its completion in 1911 and is a must visit for all. This particular building is counted amongst the best projects that Salvador Valeri i Pupurull has worked on. One side of this house features ceramic balconies with what appears like melted wax underpinnings. There are also a number of wooden galleries in the house that add an interesting touch. The edifice now also features a designer bar.
The fact that the building looks so much like one of Gaudi’s designs misleads people into thinking that he was the author of this house.

The Casa Terrades was designed by the prominent architect of modernistic style and one of the most famous architects in the world, Josep Puig i Cadafalch. The exact location of this particular structure is Avinguda Diagonal 416. Built in the early 1900s, it was constructed for the purpose of being used by the sisters Terrades.

They wished to accomplish the amalgamation of three different buildings and form a single complex. The curious thing about this building is that it contains both Medieval and Gothic elements. The most prominent feature however are the 6 towers having conical roofs. It is perhaps for this reason that this house is known locally as the Casa de les Punxes, which translates to House of the Points.

The façade of the building has been done using red bricks and stones. The anterior also includes various panels that adorn the house with images of Sant Jordi who is the patron saint of Spain.
The building was declared a National Historic Monument in 1980. Today, however, the house is privately owned and, therefore, not open to visitors. It is highly recommended, however, that one does take a moment to appreciate this remarkable piece of architecture from outside when visiting Barcelona.