A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

Mile-long cave system near Great Smoky Mountains.

This park offers a variety of sights and activities including trail rides and buffalo sightings.

One of the last Depression-era bandshells still standing was the site of Elvis Presley’s first live concert.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

This skewed English house has looked like it's going to fall over for centuries.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

This Neolithic passage tomb forms part of a World Heritage Site.

An ancient neolithic tomb that only sees the sun twice a year.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

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

The ruins of a medieval monastery named after a type of tree.

A monument to a 19th-century Irish woman whose murder inspired several literary works.

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

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.