This artistic fountain display pays homage to this area's theatrical history.

Liechtenstein's royal family calls this medieval alpine castle home.

Once silenced for being off-key, this bell has found a new voice as an interactive public artwork.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

A stunning architectural yet functional feat, towering over Oslo.

This floating sculpture of ice is a poignant reminder of nature's power.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

This fountain was designed to honor the man who helped bring water to Barcelona.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

An eclectic collection of thousands of items owned by the sculptor Frederic Marès.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

These 2000 year old remains of a Roman aqueduct are hidden inside a hotel lobby.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

This historic World War II ship is one of only 4 Fletcher-class destroyers remaining worldwide.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.