Aquariums: Henry Doorly Zoo: Scott Aquarium Columbus Zoo: Discovery Reef Brookfield Zoo: The Living Coast Memphis Zoo: Aquarium Houston Zoo: Kipp Memorial Aquarium Indianapolis Zoo: Oceans Toledo Zoo: Aquarium Pittsburgh Zoo: PPG Aquarium Fort Wayne Children's Zoo: The Reef Reptile Houses: San Diego Zoo: Reptile House Bronx Zoo: World of Reptiles Columbus Zoo: Reptile House Saint Louis Zoo: Herpetarium Smithsonian National Zoo: Reptile Discovery Center Cincinnati Zoo: Reptile House Philadelphia Zoo: Reptile and Amphibian House Memphis Zoo: Herpetarium Houston Zoo: Reptile and Amphibian House Indianapolis Zoo: Deserts (kinda) Lincoln Park Zoo: Small Mammal-Reptile House Fort Worth Zoo: MOLA Dallas Zoo: Herpetarium Detroit Zoo: Reptile Conservation Center Toledo Zoo: Reptile House Los Angeles Zoo: The LAIR Zoo Atlanta: Scaly. Slimy, Spectacular Oakland Zoo: Reptile and Amphibian House Sedgwick County Zoo: Reptile and Amphibian House Oklahoma City Zoo: Herpetarium Virginia Zoo: World of Reptiles Bird Houses: Bronx Zoo: World of Birds Saint Louis Zoo: Bird House Smithsonian National Zoo: Bird House Cincinnati Zoo: Wings of the World Philadelphia Zoo: Avian Center Memphis Zoo: Tropical Bird House Houston Zoo: Tropical Bird House Denver Zoo: Bird World Lincoln Park Zoo: Bird House Toledo Zoo: Aviary Milwaukee County Zoo: Aviary Combo Ones: Brookfield Zoo: Feathers and Scales Brookfield Zoo: Reptiles and Birds Nashville Zoo: Unseen New World Riverbanks Zoo: Aquarium-Reptile Complex Milwaukee County Zoo: Aquatic and Reptile Center
I think you'll find just about every major zoo (in the US and abroad) has at least 1 of these 3 houses, with many having 2 and a few having all 3. Aquariums are the probably the least common, but Reptile Houses and Bird Houses are pretty ubiquitous, especially in the northern US states and in Europe.
Are you just looking at major zoos because the Lehigh Valley Zoo has a reptile house. I would assume many other small zoos would have reptile houses
Moving away from the USA (I've only been to two zoos, Bronx and Central Park, the first with a reptile and bird house, the second not so much), I've found some interesting patterns myself. For example, more modern geographically-themed zoos don't have such clear-cut facilities, and some have more loose structures around these taxonomic groups. For example, I can't think of a single zoo in New Zealand which includes a proper bird house (mostly outdoor aviaries and walk-throughs), or a proper reptile house (mostly outward-facing rows of terrariums). Sure, Auckland Zoo USED TO have an aquarium and Wellington's USED TO have a reptile house in the historical animal house, but that's in the past. However, with the presence of kiwis in most major zoos, Nocturnal Houses, which I feel are rarer than those other houses proposed in the thread, are all over the place in the county. So for the hell of it, I'll count those in zoos I find have at least one of them - Zoo de Barcelona: has a reptile and bird house, both originally opened in 1972, but since around the mid 2000's, the aquarium in the Aquarama shut down. They had a couple of seahorses, frogs, etc. in the building until its ultimate closure in 2019. There's a strong possibility that a nocturnal house could open underneath the new Sahel walkway. - Zoo-Aquarium Madrid: the Aquarium is still standing strong (it's a Zoo-Aquarium, after all), but they shut down their reptile house (Naturaleza Misteriosa) in 2017, and aside from a collection of bird cages called "The Aviary", they don't have a proper indoor bird house. Talks of a new reptile house are being carried out though. - Faunia: has my favorite nocturnal house (house is an understatement, more like mansion), and a kiiiinda reptile house in "Veneno", mostly housing venomous herps and inverts, but also houses venomous reef fish and slow loris. - Lisbon Zoo: has a reptile house - Bioparco Roma: has a reptile house - Zoo Aquarium Berlin: It has it all, but the nocturnal house is currently under repair. I have to revisit them properly though, after my disastrous 1hour visit in 2006. - London Zoo; had all four categories, plus an insect house, and honestly I can't tell you which one I like most. However, plans to open a new aquarium under the insect house are now underway. - Dublin Zoo: has a new reptile house where the bird house used to be. Can't find any info on whether or not they'll ever open a new one. - Prague Zoo: has two reptile houses, a nocturnal house and a fully indoor walk-through aviary which I will generously say is a bird house.
