Live a night as a Byzantine King, with a minibar and private jacuzzi.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

Roman ruins, natural methane fires and a lovely beach.

Underwater restaurant at the coral reefs of Eilat.

Malaysian fireflies create a dazzling display as thousands light up in unison.

The cursed island of black pebbles.

Stunning wetlands ablaze with pink lotus flowers.

Walk through depictions of the torture inflicted on those who go to Buddhist hell.

Exact replica of the ancient monument, but much, much lighter.

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

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

An original apothecary from 1792.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

America's first public mental health facility.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Bizarre Cavern.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

Walk through the history of American pop culture.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Eighteen miniature death-scene dioramas.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

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