Largest collection of beer mats

Leo Pisker of Langenzersdorf, Austria, has collected 152,860 different beer mats from 192 countries to date. The largest in his collection is 76 cm x 76 cm (30 in x 30 in), and the smallest measures just 25 mm x 25 mm (1 in x 1 in) -- both of which come from Great Britain.

Beer mat collecting is known as tegestology.