Hiding in plane sight.

A tribute to those that perished during the American Revolution.

Just off the road outside Baguio, a gigantic lion's head carved into a mountain greets those driving by.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

This folk art dinosaur was almost pushed to extinction due to lack of a building permit.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

This unique structure allowed boats to bypass underwater mine barriers in the channel to enter the harbor.

In the city forest of Augsburg are oval, artificial ponds formed from a World War II bombing campaign.

Wander around the extensive remains of this 12th-century medieval church.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This elaborate High Victorian Gothic structure is one of the world's few 16-sided buildings.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

A hidden alley in urban Baltimore is a haven for graffiti artists.

Eighteen miniature death-scene dioramas.

A model home in the Medical Examiner's Office in which grisly death scenes are staged to train forensic investigators.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

America's first public mental health facility.

This museum explores the grim reality of life in the earliest British colonies in America.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.