These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

A comprehensive look at the art of Joaquín Sorolla in his former home in Madrid.

An ancient Egyptian temple in the middle of Madrid, Spain.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

Emblematic Madrid bar founded in the 1930s that is a testament to times gone by

This miniature village stays behind in the Breuer Building, even as the museums around it come and go.

Walk into the 19th century without leaving Brooklyn.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

This tiny home was originally a narrow alleyway.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

Storms, funding, and in-fighting have kept this Bermuda church from ever being completed.

This Moorish fortress has guarded Málaga from the slopes of Gibralfaro hill for nearly a thousand years.

A Roman bridge closed to car traffic in the 1990s now open to foot traffic.

A Greek tomb discovered under a palace in Naples displays ornate funeral decorations.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

This large, circular tomb is the final resting place of the first emperor of Rome.

See what remains of a once grand ancient Roman circus.

This poignant art installation raises awareness of violence against women.

An unusual resting place built into the hill with an amazing view of Lake Como.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.