A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The great Danube river starts here.

The history of sea-faring refuse and disaster is on cramped display in this Netherlands folk museum.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

The language and heritage of a nearly forgotten culture can still be explored in this Southern enclave.

This quirky curiosity shop takes its cues from the world's bazaars.

A maritime museum holding the remains of Blackbeard's pirate ship.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Floating man-made island and upscale restaurant.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Peek through a transparent pyramid and drink in the mountain made of books.

Retirement home for giant obsolete machines.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

A trash dump made beautiful by nature's power.

An abandoned, unfinished mansion on grounds strewn with lava rocks.

One of the most accessible undersea plane wrecks in the world.

In paradise, feral pigs have claimed an island all to themselves.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Eighty million natural history specimens call this gargantuan museum home.

A boutique perfumery fashioned to look like a Victorian-era shop.