Strange physical sensations and optical contradictions keep visitors coming back for more.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Webcam that broadcast the hatching of Bald Eagles to millions of viewers.

The world's largest dark sky preserve is a Canadian park established to preserve the country's last wood bison.

The world's largest Holstein cow.

A monument to the center of the North American continent may be off by a few miles.

Historic site where Native American hunters once trapped and killed buffalo.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

Northern Ireland's Brobdingnagian stepping stones.

A moving memorial to the fallen and missing from WWI trenches.

Christ's blood preserved in a Belgian town.

A museum celebrating the Canadian forces that liberated Belgium from the Nazis replete with battlefield miniatures and multiple Gardens.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Copenhagen's celebrated theme park and gardens.

Preserved "bog person" that is over 2,000 years old.

Iron Age "bog person" preserved for over 2,300 years.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A naturally mummified 2,000-year-old man.

The only castle in North America to ever house European sovereigns.