This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Visitors to Salt Springs State Park are encouraged to literally put their two cents in Penny Rock.

This small hilltop church weaves the urban history of Washington, D.C. with the national history of the United States.

One of the last mosaic tile facades found in the city.

This Masonic lodge was the first major private building to be constructed in Washington, D.C. after the Civil War.

Where you can hail your favorite fictional commanders-in-chief.

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

The National Park Service’s best-kept secret with views that rival any in D.C.

The final home of the most famous horse of the American Civil War.

The second oldest Jewish graveyard in the U.S. is tiny, with connections to George Washington and Henry Wadsworth Longfellow.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The site of the largest mass execution in Rhode Island history, haunted by the ghosts of hanged pirates.

Though his role as the inventor of baseball may be up for debate, fans still festoon Doubleday's grave with baseballs.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

The rogue roots are gradually consuming some of the historic marble grave markers.

In what is rumored to be an intentional act of spite, this memorial almost completely obscures the nearby grave of a senior officer.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

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

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This café is dedicated to serving coffee roasted by Native American-owned companies.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

This garden is dedicated to a Portland cartoonist who specialized in dark humor.