May in Seville, Cordoba, Granada, Lisbon, are we missing anything re sights, restaurants suggestions

While in Seville, be sure to visit the Plaza de Espana. It's beautiful, very grand, and you will take lots of photos here. Visit Casa di Pilatos, a small palace that is off the beaten path. Take a carriage ride. See a flamenco show. Visit the Triana neighborhood, including the Triana Mercado. Another great market is the Mercado Barranca. You can have lunch or dinner at any of these wonderful markets.

Cordoba - walk across the Roman Bridge in the evening. Look back and see the illuminated Mezquita. Explore the Juderia.

In Granada, definitely book an evening tour of the Alhambra! It is magical! And quieter than the day time.

Rick's top picks for Seville, Granada and Lisbon can be found on this very website. Click on "At a Glance" at each of those links.

There's much more to see. Rick doesn't list San Juan de Dios in Granada, just as one example. I think there's considerably more in his guidebooks. You definitely need a good one so you don't walk right past something really interesting without realizing it.

In Granada, see the cathedral and the royal chapel, where Isabel and Ferdinand are.

Take a walk around the Albaicín, including stopping at the Mirador San Nicolas to enjoy the view. If Helados San Nicolas is open, get some gelato. Los Italianos is the most popular choice for gelato in Granada (near the Plaza Nueva), but I liked Helados San Nicolas better.

Eat at Los Diamantes for seafood. Get some falafel from any of the tiny shops. Take a tapas tour (spainfoodsherpas.com, granadatapastours.com; both are excellent). Do lots of walking around and stop wherever it looks good for a beverage, then wait for your (free) tapa.

If you like gardens, there are some lovely ones -- with peacocks! -- at the Carmen de los Mártires in the Realejo district (very quick walk from the usual tourist area).

Definitely do the night visit at the Alhambra -- it's beautiful!

Visit the Mercado de San Augustín, just up from the cathedral.

For a unique Sevilla day trip rent a car for the day and drive to the quaint town of El Rocío, located in the heart of the Doñana Wetlands National Park, just southwest of Sevilla. El Rocío is a traditional white-washed Andalucian cowboy town, with its old taverns and dusty streets the town feels like something from the wild west. Virtually unknown to foreign tourists, it's an authentic slice of the little known Andalucian cowboy culture. El Rocío pilgrimage actually happens in May and is the most famous annual pilgrimage for Spaniards. May be extra lively around the time you are there.

Back in Sevilla I'd suggest taking a look at the Archivo General de Indias, a UNESCO heritage site, which is the repository of documents and artifacts of the Spanish Colonial Empire. They have temporary exhibitions of their collection and guided tour of the Renaissance palace that houses it.

While in Cordoba consider a day trip to the nearby Medina Azahara, the ruins of fortified palace-capital of Caliphate of Al-Andalus (aka the Alhambra before the Alhambra).

Thanks for all the insights, it is very helpful. Happy travels!

If you like art, the Fundacion Rodriguez-Acosta is worth visiting. However, the website says it's closed until further notice with no clue about when that might be.