For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

A scene from one of Hungary's most famous novels.

The largest statue of this convex, homogeneous object with just one stable and one unstable equilibrium point.

A relic of World War I that now exist as a piece of public art.

A diminutive statue that was inspired by the sculptor's own daughter.

This sculpture honors the man who was known as the "Righteous Among the Nations."

This statue honors one of Budapest's most beloved literary characters.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

The true meaning behind this sculpture remains unknown.

The metal leaves on this tree are engraved with the names of Holocaust victims.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

A 13th-century convent where St. Margaret of Hungary spent her teenage years.

The world’s first statue of the late Apple co-founder.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A Hungarian optometrist's charming collection of Asian art and curiosities.

Time stands still at this serene burial ground in the center of Budapest.