On a trail in Portugal's Barão de São João National Forest, a pile of faces look up at hikers from the forest floor.

Perhaps the most spectacular grotto along the Algarve coastline.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

Dead weights honor the dead of Portugal's fishing industry.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

This device was crucial to the Industrial Revolution development of Leeds.

Winner of the Leeds Award for Architecture and the Environment.

Since 1995, two red-painted metal figures have guarded the entrance to the Northern Ballet.

The name of this suspended sculpture is Latin for "high horse," which is exactly what it is.

This sculpture celebrates a boules tournament and the link between Leeds and its twin city Lille.

This sculpture of Edward of Woodstock is surrounded by eight Victorian lamp bearers.

The bizarre headgear looks like it was made for a fool, not a king.

This Victorian graveyard in Leeds is a macabre collection of beautiful tombs and memorials.

One of three sites in England that house the National Collection of Arms and Armour.

To literally keep their waste out of their own backyards, the citizens of this English city built an impressive sewer system that is still in use today.

A vintage penny arcade hidden in the back of a fun fair-themed bar.

This tiny alleyway is now a shrine to a subculture riot between the mods and rockers.

The remnants of a strange stilted building on rails can still be seen at low tide.

A hidden sculpture garden tucked within the middle of Brighton.

This concept building is the UK's first attempt at making a permanent structure of nothing but trash.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

The natural history museum displaying the British bird collections and dioramas of Edward Booth, free of charge.

One fisherman has used his love of pebbles and shore to create a crazy garden of rocky art.