Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

Golden Gate Park's historic collection of plants.

This private residence was the template for one of the most beloved television homes of all time.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Hear the quietest sound from across the dome.

Hot Doug's "Hot Dog" Stand.

The palatial McDonald's that inspired Wesley Willis.

Years of archaeology, just chillin' by the water cooler.

A speakeasy takes on Chicago's drinking culture.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The celebrated eyesore created by starry-eyed sweethearts.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

Deep scars on the earth left by the Ice Age.

These beautiful wineries were at the center of Lake Erie's "grape belt" back when the Midwest dominated American wine production.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

Take a drunken tour inside the world's largest known geode.