The anatomical-pathological collection of a man who changed surgery.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A hand-built folk art installation covered with messages of God's love.

A seemingly endless landscape of pure salt stretches far across Bolivia.

An isolated dive site teeming with cnidarians.

Hot springs monkey spa in the middle of Hell's Valley.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

This tiny little pool is said to be home to a malicious mermaid named Jenny Greenteeth.

Europe's largest prehistoric mound – burial site of a legendary king?

The largest stone circle in the world has ended up bringing up more questions than it has answered.

One of the oldest trees in Britain may have been witness to some of the country's formative moments.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

This historic abandoned train station looks like a stop for ghost trains.

These centuries old gardens have been restored to their 17th century condition.

Some wattle-and-daub, a Moorish mural, a glacial erratic, and a Giant named Gilbert.