This playground sculpture of an icon from the past is dedicated to the children of the future.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The trials and tribulations of marking Poe’s grave.

Once America's tallest structure, now a Baltimore landmark.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This historic hotel invented the chocolate brownie.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

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

An eerie, decaying ghost town destined to fade into the forest.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

The fountains of the U.S. Navy Memorial are annually salted with water from the Seven Seas as part of a nautical ritual.

A relic of FDR's brief foray into utopian urban planning.

The oldest known university in the world is in Fez, Morocco.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

The national park was once a plantation estate.

One of the best places to see wild Colonial Spanish Mustangs in the United States.

God's Saharan sandbox of wrath.

Mosaics, storks, and brothels—this ancient city has it all.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

A fortified city, home to a remaining population of five families