The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

The site of Paul Revere's historic two lantern warning.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

One of the now-less-hidden floral gems of the "Emerald Necklace."

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This eclectic homestead is home to a miniature windmill and Connecticut's last tollbooth.

This park is home to a massive bird sanctuary.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

San Francisco's first World's Fair, dedicated to the wonders of California.

This antique shop specializes in the history of print and design.

The rustic cabin-like decor of this Arts and Crafts-style church reflects the love of nature central to its little-known theology.

Guns that have been defending San Francisco since 1904.

A mysterious painting of the self-declared Emperor of the United States watches over a local hof-brau.

Radioactivity still cause for concern at this urban explorer's paradise.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

The remains of a 12th-century chapter house in Golden Gate Park.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

Half of a house.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

A Barbary Coast watering hole built into a Gold Rush shipwreck.