Places meltingknight Wants to Go

Research missiles and rainbow auroras at the world's largest land-based rocket range.

A trading post in the North Pole where children send letters.

This house's itty bitty size means no humans allowed.

This futuristic German television spire is actually the world's largest digital clock.

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

The first recognized Neanderthal remains were found in this now-lost cave in 1856.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

This early Norman castle was the first historical monument protected by an act of Parliament.

The oldest house in Chicago certainly doesn't look the part and there are some who say it doesn't deserve its title either.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

This 1913 single-screen cinema is a charming survivor in the age of the multiplex.

This cemetery is all that remains of a school for "wayward" girls.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

A Neolithic burial site built 1,000 years before Stonehenge.

This four-story steel sphere in Maryland was used to test biological weapons.

The world's first purpose-built motor racetrack was destroyed by the outbreak of two world wars.

This star-shaped artillery fort protected the mouth of the Thames from the 16th century to the Second World War.

The Australian terminal of the Pacific Cable that linked the continent to North America.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.