Stalactites and stalagmites in a beautifully lit cave.

Pompeii's less famous neighbor is still revealing her secrets.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

A submerged archeological park still holds the wonders of a Roman Sodom.

A 16th-century horror show built in a lovely Italian garden.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

A giant repository of accidentally discovered cave paintings up to 30,000 years old.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Canada's oldest sugar maple has been growing since around 1500.

A carved grave marker from the 2nd century is mounted in the alcove wall of this Bavarian church.

A 1,500-year-old, 3-story subterranean city where ancient Persians took refuge in times of war.

A circle stone within a stone circle.

The skeletal remains of the famous hominid "Lucy" were found at this spot.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.

A perfect replica of the beloved show's first set.

A tower-like theater in the Swiss Alps built to withstand the high winds and avalanches of the mountain pass.

Villagers have recycled bomber fuel tanks from the Vietnam War and turned them into very, very strong boats.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

An exotic reptile facility showcasing some of the rarest, most venomous snakes in the world.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

The Indian capital of black magic and witchcraft.