Barcelona City History Museum
A few Roman ruins in the Gothic Quarter, including the Augustus Temple and the Funeral Way on Plaça de la Vila de Madrid, are preserved by the History Museum. However, Plaça del Rei is the location where you can view Barcelona's historical past in great detail.
The ruins of a garum factory, laundries, dyeing businesses, and portions of ancient Barcino's walls are all visible when you descend in a lift. You can explore the 4,000 square meter site's size via elevated walkways.
You will travel through time as you ascend through the museum structure and enter the vaults of the Palau Reial Major, the residence of the medieval Dukes of Barcelona.
El Palau de la Musica, a gorgeous UNESCO-listed art nouveau structure, has at last begun to gain the attention it deserves from tourists, who now throng to take the 'Palace of Catalan Music' on a very affordable self-guided tour. The great theatre, with its spectacular inverted golden dome and stained glass ceiling, is undoubtedly the showpiece (representing the sun and the sky). However, the great Domenech I Montaner created both the interior and exterior, which are absolute treasures. Its balcony is one of the city's most Instagrammable locations.