Home to items never before seen by the public.

The highest peak in the state of Vermont has some interesting features.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

The romance of early commercial flight still fills this Art Deco destination.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

The world's smallest drawbridge.

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

A Barbados crypt where it's said that the coffins refuse to stay put.

A sharply wedged sundial marks the point at which each day in the United States begins.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

The world's second largest single-dish radio telescope, once used to contact E.T.

San Diego's most historic and haunted home.

Race through the maze, get your name on the sign.

Single runway interrupted by a busy road that cuts across its middle.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.