The National Museum of Mathematics or MoMath is a museum dedicated to mathematics in Manhattan, New York City. It opened on December 15, 2012. It is located at 11 East 26th Street between Fifth and Madison Avenues, across from Madison Square Park in the NoMad neighborhood. It is the only museum dedicated to mathematics in North America, and features over thirty interactive exhibits. The mission of the museum is to "enhance public understanding and perception of mathematics". The museum is known for a special tricycle with square wheels, which operates smoothly on a catenary surface.