A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Home to items never before seen by the public.

The United States Capitol's former columns still stand.

Turns out you can see the world without ever leaving Maine.

A century after his death, this covered bridge still calls to mind the plein air painter who loved it.

The place where the great marine explorer first learned to work underwater is not where you'd expect.

These etchings reveal the history of a long-gone quarantine site.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

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

This modern medieval weapon of war was built to toss pumpkins.

A small obelisk marks the spot where Captain Sam Greele was killed by a falling tree.

Site of the graveyard vine believed to be a curse on a family from the 1800s.

Even Henry David Thoreau found this glacial pothole irresistible.

A small chapel celebrating the spiritual bond between dogs and humans.

A rare opportunity to drive across the ocean floor.

The only land territory disputed between the U.S. and Canada.

This Maine bridge may be the last wire-supported bridge of its type in the world.

An elderly widow still operates the incredibly detailed model railroad she and her husband built by hand.