A winding cave grotto walkway built to provide employment for veterans after World War I.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

A woodland close to England's "most haunted village" has been the site of many unexplained events and deaths.

These crumbling Latvian forts make for some haunting seaside ruins.

The Latvian city of Ventspils is filled with dozens of cow statues showcasing unique themes.

The widest waterfall in Europe is a natural wonder and one of the only places where fish are caught in the air.

Guests become prisoners on a visit to Latvian prison.

This ornate church has survived Nazi and Soviet occupation, including a short stint as a Soviet-era gymnasium and cinema.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Open-air museum with a large collection of Soviet-era statues.

A memorial to the murdered Jews of Kaunas.

A witch wreaks ruinous revenge on this ancient church with her "enchanted leg."

The scene of the United Kingdom's most famous UFO incident, dubbed the "British Roswell."