Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Two mermen, eternally spitting into each other's mouths.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The site of the climactic scene from the classic horror film is now a historic landmark.

One part local history, 99 parts gruesome haunted house.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

The "Seinfeld" diner.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The unbelievably opulent home built for an infamous newspaperman.

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

Look closely and you’ll notice that the color changes a third of the way up the tower.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

Go inside to really appreciate this 500-year-old technological masterpiece.

A preserved block of timber buildings from the city's industrial era in the Middle Ages.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

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