Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

This ancient Egyptian obelisk still bears the wounds of World War I.

At the top of the hour, figures of the London department store's two co-founders emerge and bow to each other.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Ship-sized kinetic sculptural fantasy.

Its collection includes a broad array of social, geographic, graphic design, and political history.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

This overlooked street light once served as a KGB dead letter box.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

This secluded walkway overlooks a magnificently wild London green space.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

This coffee shop lies hidden beneath a historic church.

The 100-foot-tall (30-meter) bronze statue was built to recognize the world's only documented all-female army.

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

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

Golden Gate Park's historic collection of plants.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

San Francisco's newly reopened hands-on science museum.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.