Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

Salute the leader of the proletariat.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Walk over a 150 year old manhole.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

This bridge is haunted by the ghost of a distraught mother.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Art museum based around the collections accumulated over 58 years by one eccentric thrift store owner.

A prohibition era watering hole for the police.

The greatest real estate coup of all time.

Prove you deserve to be fed by Kenny Shopsin.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The most confusing clock in New York.

Devoted Buddhists can earn enlightenment in the next life by crawling through this symbolic nostril.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."