Tipping customs vary widely across Europe, and tourists who don’t familiarize themselves with local practices may over-tip, under-tip, or create awkward situations.
How to avoid it: Research tipping norms for each country you’re visiting. In many European countries, tipping is not mandatory, as service charges are often included in the bill.
A small tip to show appreciation is usually sufficient.
Painting is an ancient medium and even with the introduction of photography, film and digital technology, it still has remained a persistent mode of expression. So many paintings have been limned over dozens of millennia that only a relatively small percentage of them could be construed as "timeless classics" that have become familiar to the public—and not coincidentally produced by some of the most famous artists of all time. We, of course, have our opinion of what makes the grade and we present them here in our list of the best paintings of all time.