A mysterious castle built as a monument to lost love.

The ancient tomb acts as a calendar that keeps perfect time.

Memorializing an American tragedy of massive proportions.

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.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.