The largest greenhouse in the world is home to over one million types of plants.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

A Welsh sheep farm provides daily (non-sheep) meals to red kites, producing dazzling displays of aerial acrobatics.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

The beloved war-time celebrity spent time in the area before retiring to the Edinburgh Zoo.

Home to the longest wooden escalators in the world.

The sign at the garden gate reads: "These Plants Can Kill."

This giant wooden treehouse within a sprawling garden has its own eatery.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

A rocky outcrop where monks hid their most holy relic while escaping Danish invaders.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

Over a decade ago, painted penguins mysteriously appeared around Berwick-upon-Tweed for no apparent reason.

One of the few surviving examples of Victorian-era public toilets now houses a small homestay.