- ruins of the old Roman city of Barcino from the 1st century BC to the 3rd century AD;
- remnants of political and ecclesiastical buildings from the Visigoth era (300-700 AD);
- medieval spaces, including the Chapel of Santa Àgata, begun in 1302; and
- the steps up which Christopher Columbus strode to report the discovery of the New World to Fernando and Isabel of Spain.
From Bailèn 41, head to the Palau de la Música Catalana (see Walking Tour #3), cross Via Laietana, then veer toward "Plaza de la Seu," located in front of the Catedral de la Santa Creu i Santa Eulalia. Head up the incline to the left of the cathedral and then turn left into the "Viceroy's Palace," also known as the "Archives of the Crown of Aragon."
Total walking time: approximately 20 minutes . . . unless, of course, you stop to ooh and ahh!
PS: your 7 euro ticket to the Plaça del Rei site also admits you to another dozen MUHBA sites.