Countries that shut down or slow down for 2-3 hours starting around 1:00 pm (more common in smaller, rural areas) include:

• Spain, south of France, Italy, Greece, Portugal, Albania, Malta, and Switzerland.

Countries where it is common for retail shops to close on Sundays or operate on limited hours include:

• Germany, Austria, Norway, Poland, some areas of France, Croatia, the UK, Ireland, the Republic of Ireland, Switzerland and Greece ,

It is common for museums to be closed on Mondays. Check their website for hours of operation. 

Sunday or Monday might  be good travel days if the region you are visiting has limited business hours.