A huge musical instrument played by the ocean.

The angel of death appears to weep black tears at this grave marker.

The trials and tribulations of marking Poe's grave.

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

A luxuriant botanical garden below sea level.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Nature took her revenge on the "Wickedest City in the World."

Hidden just under the waters around this Turkish island are the ruins of a once great city.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

Submerged trees jut ghost-like out of an idyllic turquoise mountain lake.

Numerical symbolism abound at East Asia's oldest observatory.

Native Americans built this circle of stones, which was used to predict astronomical events.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

The final resting place of New Orleans' most famous voodoo priestess.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

A new kind of theme park for adults off the Las Vegas Strip.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

An exotic wildlife habitat right off The Strip.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

See massive fossils that are over 200 million years old in northeastern Arizona.

The rocks in this arid basin leave trails of movement behind them.