Unusual museum

Cockroach Hall of Fame, Plano, Texas, USA Record-breaking cockroaches, and insects dressed as famous people Colman's Mustard Museum, Norwich, Norfolk, UK Tells the fascinating history of mustard

The Museum of Dog Collars, Leeds Castle, Maidstone, Kent, UK A collection of dog collars, most of them dating from the Middle Ages

Gallery of Also-Rans, Norton, Kansas, USA A collection celebrating people who came second or lost political campaigns and other contests

The Lawnmower Museum, Trerice, Cornwall, UK Mechanical lawn mowers through the ages

The Medieval Crime Museum, Rothenburg, Germany Medieval crime, punishment and torture implements National Wool Museum, Geelong, Australia

The only museum devoted to wool, opened in 1988 Nut Museum, Old Lyme, Connecticut, USA Nut carvings, 2.4-m long nutcrackers and other nut-related exhibits

Philips Mushroom Museum, Kennett Square, Pennsylvania, USA A museum focusing on all types of mushrooms and other fungi

The Piggy Bank Museum, Amsterdam, Netherlands Displays 12,000 piggy banks from all periods

Porter Thermometer Museum, Onset, Massachusetts, USA More than 3,000 devices for taking temperatures