Constructed thousands of years ago, these stone circles offer incredible insight into the lives of the people who built them.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

A historic pub with traditional Irish cuisine, fine drinks, and a paranormal past.

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

Experience this Iron Age village the way that its original residents would have.

The library of every book lover's dreams.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

Two stunning 17th-century libraries and a cabinet of curiosities.

The beautiful baroque library of the Hapsburg empire.

250-year-old farm now features sculptures, a petting zoo and a hippy-bazaar.

A forest wonderland caused by Burlington, Vermont's aggressive southwestern winds.

Designed as a place for patients to take in the scenery, this tower has a dark history.

Scary metal statues adorn some of the signature buildings of Burlington, VT.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

These mysterious petroglyphs in Vermont reflect a troubled history in the treatment of Native American culture.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

Cryptid lake monster honored with its own monument.

Taxonomy experiment known for quirky collections.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

Eighteen miniature death-scene dioramas.

The mysterious headstone of an unidentified bank robber was seen visited, every year, by a woman in black.

A few stone foundations and an old graveyard are all that is left of this once thriving settlement in the wilds of Connecticut.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

Nature is leading a successful mutiny on this century-old freighter.