Start at Abando Station, where you'll see the spectacular stained glass window in the main hall. Walk along Hurtado de Amézaga Street, where hidden gems like the Sociedad Bilbaína Building await.
Head to Plaza Circular and step into the Church of San Nicolás, a beautiful example of Baroque architecture. Continue along Buenos Aires Street, known for its buildings with art nouveau details. Reach Moyúa Square and admire the Chávarri Palace, inspired by Flemish architecture. From there, stroll down Alameda Recalde to spot buildings with curved bay windows, colorful ceramics, and ornate wrought-iron balconies.
End your walk with a visit to the Museum of Fine Arts, where the original modernist entrance is still preserved.