Local promotional literature from the Nacogdoches Convention & Visitors Bureau describes Nacogdoches as "the oldest town in Texas." Evidence of settlement at the same site dates back to 10,000 years ago. It is near or on the site of Nevantin, the primary village of the Nacogdoche tribe of Caddo Indians.

By any measure, Florida takes the prize for the flattest state in the U.S. In fact, the highest point in Florida is only 345 feet above sea level.

Iran borders the Caspian Sea, Persian Gulf, and Gulf of Oman.

With four major rivers and several smaller ones, Nebraska has more miles of rivers than any other state in the U.S.

San José is the capital of Costa Rica and the nation's largest city. Though relatively few people live in the city center, it is the most important working area of the country, which brings in more than a million people daily.

Fortifications unearthed in Jericho dating back to 6800 B.C. confirm that it is the earliest known walled city. Today 20,000 people call Jericho home.

According to Hindu legend, Varanasi is more than 5,000 years old and is considered the oldest city in the world, though evidence of habitation only goes back about 3,000 years. Located on the banks of the Ganges River, "the city of temples" is still the oldest city in India and is considered the holiest city in the world to Hindus.

Nebraska has the U.S.'s largest aquifer (underground lake/water supply) -- the Ogalala aquifer.

The Zagros Mountains, a series of parallel ridges interspersed with plains that bisect Iran from northwest to southeast, have many peaks exceeding 3,000 metres (9,843 ft) above sea level, and in the south-central region of the country there are at least five peaks that are over 4,000 metres (13,123 ft).

Although it is the tenth largest state by area, Wyoming is the least populous of the 50 United States, with a population smaller than many major cities.