Sidedoor, hosted by Lizzie Peabody and produced by the Smithsonian Institution, takes listeners behind the scenes of the Smithsonian's collections with scientists, historians, artists and curators. The show has 258 episodes released about every two weeks, with a median length of roughly 32 minutes. Estimated downloads are 20,000 to 80,000 per episode, with an estimated rate of $360 to $2,000 per episode.
Smithsonian-backed history and science stories for an engaged, educated listenership
- Biweekly episodes with a median length of about 32 minutes give sponsor messages room to land
- A 4.6 Apple Podcasts rating from 2,230 ratings signals a loyal, satisfied audience
- Institutional credibility of the Smithsonian sits alongside a long archive of 258 episodes
Brand fit report
Content
- Formats
- narrative, interview, solo monologue
- Tone
- curious, educational
- Language
- English
- Production
- Studio production
- Typical length
- 25 to 35 minutes
Audience
Commercial
- Brands seen
- None yet
- Categories promoted
- None yet
- Affiliate links
- No
No sponsor mentions found in the feed
Suitability GARM Brand Safety Floor + Suitability
Family friendly
Episode titles such as 'The Baby Elephant and The Elixir of Poo' and 'The Accidental Rise of Botox' cover museum topics with no explicit flags.
We classify content, never people. No age, gender, ethnicity, religion or political views are inferred about the creator. Audience figures are estimates unless marked verified. Creators can correct anything on their profile.
Where to listen
| Platform | Link |
|---|---|
| Website | www.si.edu/sidedoor |
| Apple Podcasts | podcasts.apple.com/podcast/id1168154281 |
| RSS feed | feeds.si.edu/SmithsonianSidedoor |
Benchmark score: 86 / 100
Public rule, same for everyone. How it works.
Recent episodes
| Episode | Date | Length |
|---|---|---|
| The Baby Elephant and The Elixir of Poo | 2026-10-07 | 36 min |
| It's Season 13! | 2026-09-30 | 2 min |
| The Accidental Rise of Botox | 2026-09-16 | 25 min |
| The Art of Slowing Down | 2026-09-02 | 27 min |
| A Nature Lover Confronts Her Fear of Spiders | 2026-08-19 | 25 min |
| America, Meet America | 2026-08-05 | 25 min |
Last six episodes from the show's feed, latest 12 days ago, a new one about every 14 days.
More than 154 million treasures fill the Smithsonian’s vaults. But where the public’s view ends, Sidedoor begins. With the help of biologists, artists, historians, archaeologists, zookeepers and astrophysicists, host Lizzie Peabody sneaks listeners through the Smithsonian’s side door, telling stories that can’t be heard anywhere else. Check out si.edu/sidedoor and follow @SidedoorPod for more…
About Sidedoor
Sidedoor is a podcast produced by the Smithsonian Institution and hosted by Lizzie Peabody, according to the show's feed and website. Each episode takes listeners behind the scenes of the Smithsonian's vaults, bringing in biologists, artists, historians, archaeologists and astrophysicists to tell stories about objects and research that the public rarely sees. The show has released 258 episodes with a cadence of about every two weeks, and episodes typically run around 30 to 35 minutes.
The show holds a 4.6 average rating from 2,230 ratings on Apple Podcasts, according to Apple's listing. Its audience is estimated, not measured: listeners are likely to be adults interested in American history, science and culture, with an estimated 20,000 to 80,000 downloads per episode. No sponsors appear in the feed. Based on those estimates, a host-read mid-roll could be priced around $360 to $2,000 per episode, making it best suited to education, travel, and cultural brands.
Brands that want to reach a curious, educated audience through a credible institutional show should consider Sidedoor. The Smithsonian's publisher status suggests sponsor placement would need institutional review before booking.
Written from the show's public RSS feed, its Podcast Index listing and episode titles. Numbers updated 2026-10-19. Sidedoor can edit or remove this page at any time.
Questions about Sidedoor
How much does Sidedoor charge for a podcast sponsorship?
Sidedoor has no published rate card. Starbooked estimates a host-read mid-roll at about $360 to $2,000 per episode, based on an estimated 20,000 to 80,000 downloads per episode. Actual pricing depends on the publisher's terms.
What is Sidedoor about?
Sidedoor, produced by the Smithsonian Institution and hosted by Lizzie Peabody, goes behind the scenes of the Smithsonian's collections. Episodes feature scientists, historians and artists telling stories about objects and research.
How do I contact Sidedoor about sponsoring an episode?
The show's contact email unlocks on Starbooked for $0.80. Boosted shows can be booked through Starbooked directly.
Similar creators
Podcast and other creators in history, ranked by score.
| Creator | Niches | Est. downloads | Median views | Rate | Score |
|---|---|---|---|---|---|
Evil Genius with Russell Kanepodcast · GB | comedyhistory | 50k | – | $360–2000 | 86 |
What to Carry, What to Burnpodcast | survival storieshistory | 50k | – | $360–2000 | 86 |
All Bad Thingspodcast | true crimedisasters | 5k | – | $40–200 | 86 |
راوکست | Ravcastpodcast | historypersian history | 15k | – | $90–620 | 86 |
Fourth Reich Archaeologypodcast | historypolitical commentary | 5k | – | $40–200 | 86 |
Dan Snow's History Hitpodcast | historydocumentary | 55k | – | $540–2000 | 85 |