Traditional 11th-century outdoor tannery.

God's Saharan sandbox of wrath.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

A fortified city, home to a remaining population of five families

The other side is actually green.

Mosaics, storks, and brothels—this ancient city has it all.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

The monumental steeple on Amherst College's campus has no church attached to it.

One man’s hobby is another man’s world of metal wonders.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

Books you don’t need in a place you can’t find.

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.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

An enormous, inside-out glass globe built in 1935.

20,000 pieces in a Frank Gehry-designed building.

Elaborate hand-carved wooden clocks two brothers made in their spare time are on display at this handsome little museum.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

A giant steel sculpture with animals in its shadows.

Tucked away on the second floor of a small town library is one of the great private Victorian taxidermy collections looking today very much like it did in 1909.

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

The Hudson River School comes alive at this palatial estate.