At the tip of La Rambla in the center of the Plaça de Catalunya, this monument celebrates Francesc Macià i Llussà, a Catalonian politician who spoke out for an independent Catalonia.
The Museu d'Historia de Barcelona has excavated miles of Roman ruins of the original city of Barcino, founded by the Romans more than 2000 years ago, under the streets of modern Barcelona.
Tourist trap? Perhaps. But it's impressive to see what they can accomplish with these machines built in the 1570s, which are still used to grind paint and do other industrial tasks.