The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

This historic estate on the east shore of Lake Tahoe was home to an eccentric millionaire (and his pet elephant, Mingo).

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A Roman spa buried deep beneath the City of London.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Two plaques commemorate the site of Shakespeare's first theatre.

Charles Babbage's proto-computer, painstakingly brought to life.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A naturally mummified 2,000-year-old man.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

Giant, friendly pelicans in Central London, the most unlikely of places.

Artists and musicians now rule over this former rail station.

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

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

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