A small fictional South American nation situated between Paraguay and Argentina.

This small island in the Mediterranean Sea is where Medusa first appears in Fantastic Four #36.

The sea between Europe and Africa.

An underwater A.I.M. base used as a training center for Andrew Forson's black guard.

City with an overpopulation of superheroes, where the Inferior Five reside.

Upper-class Tokyo District

Wonderful city in Victoria Australia.

The Meld is some sort of survivor camp or town in what appears to be an apocalyptic world in an unknown time.

Melnibone also known as the Dragon Isle is the homeland to all Melniboneans including the Dragon-Emperor Elric.

A planet protected by the Green Lantern Liana.

City in Tennessee.

Menethil Harbor is located in the western shore of the Wetlands. This port city is the bastion of the Alliance in the Wetlands.

Menzoberranzan is one of the largest, if not the largest city of drow in the Underdark of Faerun. Drizzt Do'urden is perhaps the most well known citizen of the city to the surface world.

The realm of Mephisto is (one of) Marvel's appropriations of the concept of Hell.

An alien world covered almost entirely by water. Many races inhabit Mer including Humans, the Kree, the Scon and the Antari.

Mercury is the first and smallest planet of the Solar System. It lacks an atmosphere and has a large iron core. The planet has the highest surface temperatures in the System due to its proximity to the Sun.

Mercury Sun is a prominent news publication organization.

A hospital in New York City that appeared in the Fantastic Four comic.

A pond located at the Farm made for Mermaids.

Command center for M.E.R.O..

University where Slam Bradley & Shorty Morgan attended for awhile.

Homeplanet of the Pao'ree. A peacefull race that was lead by their queen Ventolin Xtal

Mesopotamia is the area of the Tigris–Euphrates rivers. The majority of the area is currently in control by Iraq with smaller areas in Syria, Turkey and Iran.

Capital of Argos.

The homeworld of Shade.

The home of super hero Plutona and several others

Metro College is an educational institution of the Marvel Universe. Former students include Jean Grey, Johnny Storm, Ted Roberts, Misty Knight, Calvin Rankin and Wyatt Wingfoot.

The futuristic city from the Fritz Lang movie.

Metropolis is much more than a bustling urban center. Like many east coast American cities, Metropolis is a melting pot of peoples and cultures from around the world. The city is often referred to as the Big Apricot, and the City of Tomorrow.

The Metropolis General Hospital first appeared in the TV Show "Smallville". It's one of the main hospitals in Metropolis.