A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

Legend says this rock was once a chopping block for public executions.

It's said this was once the home of King James V's pet lion.

This pyramid is dedicated to all those who suffered martyrdom for civil and religious liberty in Scotland.

These formal gardens were designed to be admired from the vantage point of the castle.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Stairs often replace streets on the steep slopes of this old mining town.

The biggest solar telescope in the world helps reveal the secrets of our sun.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Once a year, at exactly 11:11 a.m., this monument comes to life.

Once disputed as the largest sundial in the world.

A geological mystery on Camelback Mountain.

A mysterious "wedding cake" castle in the middle of the urban desert.

The unusual burial monument of Arizona's first governor.

A self-built castle made by a mysterious man.

The "Father of Arizona" tried to build a Zoroastrian fire temple on the hill where he's now buried.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Rumor had it that these concrete crosses scattered across the Arizona scrubland helped align spy satellites. (They didn’t.)

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

A historic jail preserves etchings from over a century of incarcerated people in a town with a rough and tumble past.