Once a dumping spot, now a park with a kayak launch.

One of only two commuter aerial tramways in the United States.

A graffiti Mecca welcoming artists from around the world.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

It may take some time to locate, but it's sure to warm even a heart of stone.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

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

The monster at the center of the Darwin Center Spirit Collection.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

Rebuilt remains of a temple to Roman god Mithras.

Eighty million natural history specimens call this gargantuan museum home.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A kaleidoscopic warehouse-maze of handmade neon signs.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

There's an old indoor swimming pool hidden directly underneath the White House Press Briefing Room.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

A nostalgic bibliographic gem.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

A painfully obvious spy house sits right across the street from the Russian Embassy.