Torre de Comunicacions de Montjuïc, Barcelona

The Torre de Comunicacions de Montjuïc, or Montjuïc Communications Tower, is an iconic modernist structure designed by Santiago Calatrava. Its innovative design and panoramic views make it a striking landmark. While it's primarily a telecommunication tower, its architectural brilliance and the opportunity to enjoy breathtaking vistas from the top make it a unique attraction for architecture and photography enthusiasts.