Can you recommend places to visit in Barcelona if I'm interested in architectural photography?
Certainly! Barcelona is a city known for its stunning architecture, ranging from Gothic and Romanesque to the iconic modernist works of Antoni Gaudí. Here are some places you might find particularly interesting for architectural photography:
 
Park Güell: Another Gaudí creation, Park Güell is a public park with colorful mosaics, sculptures, and architectural elements. The panoramic views of the city from here are also worth capturing.

Casa Batlló and Casa Milà (La Pedrera) : These two modernist buildings designed by Gaudí showcase his unique style. Casa Batlló's dragon-like façade and Casa Milà's undulating stone facade are great subjects for architectural photography.

Palau Güell: Located in the El Raval neighborhood, Palau Güell is one of Gaudí's early works. The ornate design and use of materials make it an interesting subject for photography.

Barri Gòtic (Gothic Quarter): Wander through the narrow streets of the Gothic Quarter to discover medieval architecture, charming squares, and historic buildings.
 
Remember to explore the city with your camera in hand, as Barcelona is full of hidden gems and unexpected architectural delights.