A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

A statue honors the children who fought Nazis in Poland.

These massive moving sand dunes have swallowed an entire village and are still on the run.

Deep in a Polish forest, this collection of Iron Age megaliths still holds onto many of its ancient secrets.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Museum dedicated to "the man who moved the Earth."

A huge wooden clock that is so beautiful its creator was forcibly blinded.

This man-made mound monument was built out of soil from all across the Polish empire.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Real bones which are said to have belonged to a Polish dragon.

An underground city of salt.

Famously misunderstood wonder of the ancient world

Every equinox this Maya pyramid puts on a spooky ancient light show.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Become a prohibition rebel.

Elevated freight railway turned wildly successful urban park.

A World War II-era submarine is stuck in the mud in New Jersey.

Seven golden statues rise into the sky from sculptor Victor Victori's New Jersey front lawn.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.