The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

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

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

The Habsburgs' royal collections of art and wonders.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The final resting place for the remains of 143 Habsburg royalty.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The beautiful baroque library of the Hapsburg empire.

Certain traditions prevail on the least-visited island of the Aran Islands.

Jesus' footprints and the first catacombs in the world.

Ruins of a Carnegie family mansion on Cumberland Island.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Dedicated to the history of the health sciences.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

Dental instruments from the illustrious history of American dentistry.

Paths are maintained, but trees have taken over plots.