A. The McCaffrey Pumpkin Patch.

Q. Where is it supposed to be on the show?

A. Somewhere in Miami.

Q. When did we see it on the show?

A. In Episode 4 - "Let's Give the Boy a Hand".

After a severed hand is found at the beach, and then a severed foot, is found near the river - both from the same man (Tony Tucci, the night watchman at the Ice Arena) - it becomes clear that the Ice Truck Killer is keeping his victim alive (at the former Angel of Mercy hospital) while he performs the amputations.

The police wait for the next shoe to drop, and when it does, Dexter gets a call to come to the McCaffrey Pumpkin Patch.

Dexter knows it well.  Like the previous locations where the other body parts were left, this place has childhood memories for Dexter.

In a flashback, we see a young Dexter, his father and his sister, Debra, riding on a hayride wagon through the pumpkin patch.

Dexter seems to be enjoying himself, playfully throwing straw at Debra, but when his father mentions this, Dexter whispers that the hay is giving him allergies, they're just going around in circles in a pumpkin patch, and he doesn't get it. (Once again, he's been faking being normal).

It cuts back to the present, and we see Dexter arriving at the same place, only this time it's a crime scene, swarming with police.

They show Dexter a bloody leg (the portion below the knee), and mention that the killer is working his way up the leg.

As in the previous instances, the killer has also left behind a photo of the severed part (in the straw inside the hayride wagon, this time), posed similarly to Dexter's old family photo.

Q. What is it actually in real life?

A. A public park.

Q. Where can I find it in real life?

A. This scene was shot in Bicentennial Park, located at 1075 Biscayne Blvd (between NE 9th & NE 13th Streets), on the waterfront of Miami's Biscayne Bay. (That's just south of the MacArthur Causeway bridge, and just north of the American Airlines arena.)

Here is an aerial photo of the park. And here is a map link.

In the flashback scene aboard the hay wagon, they on the road in the northeast corner of the park. The camera in those scenes is looking north, towards the MacArthur Causeway bridge.

In the present day scene (with the severed leg), they moved down to the southeast part of the park, and the camera is mostly looking south down the coastline towards south downtown Miami.

(Behind Debra in those scenes, you can see the skyline of Miami in the distance. The tallest of the skyscrapers seen that scene is the Wachovia Financial Center, at 200 South Biscayne Blvd.)

Warning: from what I have read (as of 2008), the park has fallen into a desolate state, is filled with the homeless, and may not be safe to visit. Plans call for the park to be revitalized and renamed Museum Park (for two planned museums)

Q. How the heck did you figure out where it was?

A. This wasn't easy - especially since I've never been to Miami.

Relying on Live Local's aerial photos, I was forced to try to identify objects in the background of the scenes and then triangulate the camera position from those known locations...

I started with the row of skyscrapers visible in the distance when Debra is talking to Dexter (near the severed foot). With a lot of work, I managed to track down the names & addresses of those tall buildings, and was then able to make a reasonable guess about which way the camera was facing in that scene (south or southeast).

Then I switched to the flashback scene on the hayride, and here I struck paydirt. A bridge can be glimpsed in the background of that scene. The bridge alone wasn't enough of a clue (Miami has too many bridges), but that giant antenna next to the bridge was a dead giveaway. You don't see that everyday... Add to that the shape of the shoreline and a building under construction to the southeast, and it became clear that they had shot the scene in Bicentennial Park.