A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Electrical pylon in the shape of Disney's beloved mouse.

A state park that once served as an important river crossing, and now offers protected lands for endangered plants and animals.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

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

A Christian-themed amusement park and complex rocked by scandals.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

A pocket of jungle amidst urban expansion in Panama.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

This spot in St. Louis, marked with a simple sign, has seen more pro baseball than just about anywhere else in the world.

This hidden jockey “walk of fame” celebrates the winning riders of the Kentucky Derby.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The origin of the Nixon tapes is rooted in technological incompetence as much as secrecy.

Taste the white whiskey that the United States' first president once distilled and enjoyed.

Ride the subways of yesteryear.

A former utopian healing center created by a huckster and built by derelicts.