Casa Batllo house by Gaudi, Barcelona

The undulating shapes of hung aluminum chains, in the evacuation staircase.

Under-the-sea effect in the lobby.

Stained glass in the second-floor gallery.

Stained glass and curvy pale wood.

The ceiling in the second-floor gallery, like a seashell.

The rooftop and its tiled floor.

Wavy lines on the rooftop.

The busy ironwork balconies and windows, seen from the courtyard.

Pretty shapes in the wood of a staircase tucked away.

Raised tile in the lightwell.

The skylight and its tiled lightwell.

Letter painted in gold on a doorway.

The service area or loft, with rows of Mediterannean arches.

Mediterannean chunky architecture in the loft area.

Metallic wall near the gift shop.

The rooftop.

Sloping tiled chimneys on the rooftop.

The view from the rooftop.

Rooftop, like the scales on a dragon