One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

Secret refuge and museum of the Duke of Florence.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The middle finger of modernity.

This old ruin once served as a post office, a train station, a restaurant, and a bridge to the Atomic Age.

An array of ancient artifacts from Bronze Age Bristol and other civilizations are housed in this museum.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

It houses a menagerie of wondrous taxidermy specimens from around the world, including the remains of a famous gorilla.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.

Cathedral-like Victorian vaults are hidden within this iconic bridge.

A modern Nordic Pompeii on the Icelandic island of Heimaey.

This museum explores how a 1973 volcanic eruption forever changed this small Icelandic island.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

Internet rumors, often involving Icelandic singer Bjork, have abounded regarding this isolated outcrop of rock.

This miniature village stays behind in the Breuer Building, even as the museums around it come and go.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

Bowl in splendor, if you're lucky.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

An abandoned relic of the city's failed experiment with below ground transit.