Granting the right of way to ships over surface traffic since 1917.

The highest point in Washington state is a volcano covered in glaciers.

Every drop of water in this 27-mile long reservoir was pumped up from the Columbia River using power from Grand Coulee Dam.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

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

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A self-explanatory attraction allows fans to respectfully remember and honor a comedy legend.

In Houston's airport, a cow is properly equipped to jump over the moon.

The oldest church in Inverness witnessed the brutal executions of many Scottish soldiers.

Designed to allow funerals to proceed over the River Dulnain.

A ceramic postbox where visitors can post original poems and creative messages.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

Glasgow's own "tipsy" temperance monument.

The largest terracotta fountain in the world, built to commemorate Britain’s Victorian achievements.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

An 18th-century religious argument etched into stone.

In the depths of Glasgow Cathedral's crypt, one pillar stands out from all others.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

The oldest house in Glasgow is now a museum dedicated to the city's medieval history.

A unique art installation located on what was once considered the widest railway bridge in the world.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

An angelic, yet demonic-looking figurine presides over one of Glasgow's most ancient streets.

Glasgow's oldest pub has a proud literary tradition and possibly a ghost or two.

A six-ton wedding present for the King of the Scots.