Prompt Title: Similar event spaces in Barcelona

As a language model AI, I am unable to browse the internet for real-time information. However, based on my knowledge of Barcelona up until September 2021, I can provide you with some suggestions for event spaces that have similarities to SALÓ DELS MIRALLS. Please note that availability, pricing, and features may have changed since then.

1. Casa Llotja de Mar: Located in the Gothic Quarter, Casa Llotja de Mar is an elegant and historical event venue that offers a range of unique spaces, including a grandiose ballroom with large mirrors and ornate decorations, similar to SALÓ DELS MIRALLS.

2. Palau de la Música Catalana: A stunning concert hall and UNESCO World Heritage Site, Palau de la Música Catalana offers a variety of spaces for events. The main concert hall is adorned with exquisite stained glass windows, and some of its other rooms feature impressive decorative elements.

3. Casa Batlló: This iconic Gaudí-designed building offers a variety of event spaces, including the Noble Floor, which boasts intricate architectural details, stained glass windows, and an elegant atmosphere.

4. El Gran Teatre del Liceu: This historic opera house offers various event spaces, including the Salon de los Espejos (Mirror Room), which features large mirrors and a luxurious atmosphere similar to SALÓ DELS MIRALLS.

5. Palau Requesens: This medieval palace, located in the Gothic Quarter, offers a range of event spaces, including the main hall with its impressive Gothic architecture and a charming courtyard.

6. MNAC (Museu Nacional d'Art de Catalunya): This museum, housed in the stunning Palau Nacional, offers a variety of event spaces, including halls with elegant interiors and beautiful views of the city.

Please verify the current status and availability of these event spaces before making any plans, as my knowledge may be outdated.