A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

A haven for book enthusiasts across the street from Retiro Park.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Northern Ireland's Brobdingnagian stepping stones.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

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

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

The modern birthplace of Irish freedom.

This conservatory allows a little bit of the tropics to thrive in the middle of a major Canadian city.

This Elizabethan hedge maze is one of only six in North America.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Small ship votives hang from the vaulted ceiling of this port-side church with a Latin inscription on the wall.

The world's only and thus largest collection of its kind celebrates everyday wonder through simple umbrella sheaths.

The Teenage Mutant Ninja Turtles stop thieves at the site of a historic 1876 bank robbery.

The largest collection of historic military firearms in the United States.

Take a step inside the picturesque studio of America’s most renowned sculptor.

A rich collection honors the iconic American artist, down to the jacket worn in his “Freedom of Speech” painting.

You can get anything you want at the former site of the restaurant immortalized by Arlo Guthrie.

The mansion home of author Edith Wharton.

Wander the sprawling living museum on the site of one of a 16th-century community.

Herman Melville wrote 'Moby Dick' in this landmark 18th-century house surrounded by farmland.

The hero of the women's suffrage movement birth home is now a museum dedicated to her legacy.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.