America's post-nuclear-attack chambers of Congress.

A beachside cave filled with Bronze Age metalwork, pottery, and human remains.

A curious collection of mechanical moving figures.

A 200-year-old collection of oddities and medical paraphernalia.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This Arcadian garden in the Pentland Hills boasts over 270 artworks by Scottish artist and poet, Ian Hamilton Finlay.

The heads of two giant mythological water horses honor Scotland's horselord past.

360° views of the city plus five floors of optical illusions and hands-on science.

A site of pagan worship which still attracts people looking for fairies.

A 30-acre garden inspired by the principles of modern physics.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

The man who was president for only one day and spent most of it asleep.

This simple home was the beginning of a long journey for the iconic Western film star.

Eight feet in diameter and more than 24 feet around.

Largest gathering of hobos in the country has been meeting annually since 1900.

An old town theater converted into a celebration of the hobo legacy.

Rusted and decayed, this former mining site is a portal to the past.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

A museum celebrating the Victorian obsession with hair art.

Seven golden statues rise into the sky from sculptor Victor Victori's New Jersey front lawn.

The longest of the four remaining covered bridges in Missouri.

A celebration of the animation wizard's childhood home and antique railroad memorabilia collection.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

The site of one of history's most indelible and horrific tragedies.