An Irish Memorial commemorating those who perished due to potato blight.

World's first "penitentiary," meant to be humane, drove men insane.

Dr Barnes' $25 billion private collection of art and arboretum.

A rare view of a preserved Victorian science museum.

This jail which was in service for over a century is now open for curious visitors.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

In which a local geological marvel becomes a quaint roadside attraction.

Arlington Cemetery exhibit dedicated to death and grieving.