A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

Order a salt beef-loaded beigel at any hour of the day or night at this East End institution.

The hippo that stands on this university campus was once a drunken flea market purchase.

This Annapolis home was built by one of the signers of the Declaration of Independence.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Visit a sweet shop selling one of the first candies ever made and sold in America.

Two thousand artifacts from around the world collected by one woman who loved to travel.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

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

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

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

Inspired by Thomas Stothard's painting of the "Journey to Canterbury," albeit with Canterbury natives.

Dedicated to nine marines from Massachusetts who perished during the Beirut bombings.

After protestors toppled a statue of a 17th-century slave trader, the pedestal where it once stood remains unoccupied.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

Designated as an Underground Railroad research site.

The world-record holder for the longest bridge stretching continuously over water.

Designed to commemorate the founding of the first settlement in Delaware.

This groundbreaking 16th-century map is known as "America's birth certificate."

This fertility idol of questionable authenticity inspired an iconic Indiana Jones artifact.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A family agreed to sell their property to Disney on the condition that this tree, planted as a wedding gift, would not be removed.